ids.js

	/*
		vIDS (virtual Information Display System) for VATSIM
		
		Filename: ids.js
		Function: Javscript backend for IDS site
		Created: 4/1/21
		Edited: 
		
		Changes: 
	
	*/
	
	// Code below handles vIDS automatic data refreshes
	var setRefreshTime = 15; // Defines vIDS refresh rate. Default is 15 (VATSIM JSON updates every 15 seconds)
	var refreshTime = setRefreshTime;
	var refreshTimer = setInterval(function(){
		if(refreshTime <= 0){
			refreshData(false,document.getElementById("pickMulti").value);
			refreshTime = setRefreshTime;
		}
		var sec = " second";
		if (refreshTime > 1) {
			sec += "s";
		}
		document.getElementById("refresh_countdown").innerHTML = "Refresh in " +refreshTime + sec;
		refreshTime -= 1;
	}, 1000);
	
	window.setTimeout(function() {
    $(".alert").fadeTo(500, 0).slideUp(500, function(){
        $(this).remove(); 
    });
	}, 2000);
	/*
	// Keypress listener
	var keylog = '';
	document.addEventListener('keydown', function(evt) {
		keylog += evt.key;
		if(keylog.match(/bruce/gi)) {
			alert('Bruce mode!');
			this.removeEventListener('keydown',arguments.callee,false);
		}
	});
	*/
	function showLocalIDS(template) { // Makes the local display visible
		//alert("showing local");
		loadingNotice();
		document.getElementById("display_template").value = template;
		var other = "";
		if(template == "local") {
			other = "a80";
		}
		else {
			other = "local";
		}
		document.body.style.backgroundColor = "black";
		document.body.style.backgroundImage = null;
		//document.body.classList.add("black_background");
		document.getElementById("landing_hdr").style.display = "none";
		document.getElementById("landing").style.display = "none";
		//document.getElementById("landing").style.visibility = "hidden";
		//acknowledgeChanges(); // Clear change acknowledge (if user was monitoring multi and decided to switch displays)
		document.getElementById("local_ids").style.display = "block";
		$('.template_' + template).show();
		$('.template_' + other).hide();
		if(template == 'a80') { // Because Joe wants it this way... note
			var temp = document.getElementById('grid5x1').innerHTML;
			document.getElementById('grid5x1').innerHTML = document.getElementById('grid5x2').innerHTML;
			document.getElementById('grid5x2').innerHTML = temp;
		}
		else {
			if(document.getElementById('grid5x2').innerHTML.includes('Outer')) { // User was viewing A80 and has switched to local, so revert display
				var temp = document.getElementById('grid5x1').innerHTML;
				document.getElementById('grid5x1').innerHTML = document.getElementById('grid5x2').innerHTML;
				document.getElementById('grid5x2').innerHTML = temp;				
			}
		}
		setDynamicMargin();
		acknowledgeChanges(); // Clear change acknowledge (if user was monitoring multi and decided to switch displays)
	}
	
	function showMultiIDS() { // Makes the multi-airfield display visible
		//alert("showing multi");
		loadingNotice();
		$('#launch_multi').modal('toggle');
		if(document.getElementById("pickMulti").value == '?') {
			$('#multi_template').modal('toggle');
		}
		else {
			refreshData(init=false,template=document.getElementById("pickMulti").value) // IS THIS WHAT IS CAUSING THE RAPID REFRESH PROBLEM???????????????
			document.body.style.backgroundColor = "black";
			document.body.style.backgroundImage = null;
			document.getElementById("landing_hdr").style.display = "none";
			document.getElementById("landing").style.display = "none";
			//document.getElementById("landing").style.visibility = "hidden";
			document.getElementById("multi_ids").style.display = "block";
			//alert(document.getElementById('templateCreator').value);
			/*
			if((document.getElementById("cid").value == ADMIN)||(document.getElementById("cid").value == document.getElementById('templateCreator').value)) { //**Note: need to add conditional in to allow creator to delete their own templates
				document.getElementById("templateDeleteMenu").classList.remove('disabled');
			}
			else {
				document.getElementById("templateDeleteMenu").classList.add('disabled');
			}
			*/
		}
	}
	
	function launchMulti() { 
		//document.getElementById("pickMulti").value = "X";
		//alert(document.getElementById('pickMulti').selectedIndex);
		$('#launch_multi').modal('toggle');
	}
	
	function templateMod(fn) { // Modify a multi-IDS template
		if(fn == 'save') {
			var valid = true;
			var errors = '';
			if(document.getElementById('template_name').value.length < 1) {
				valid = false;
				errors += '- Template name must be at least 1 character long\n';
			}
			if(document.getElementById('template_aflds').options.length < 1) {
				valid = false;
				errors += '- Please add at least 1 airfield to the tempalte\n';
			}
			
			if (valid) {
				// Save the tempalte and display it for the user
				var name = document.getElementById('template_name').value;
				var options = document.getElementById('template_aflds').options;
				var payload = name + '\n' + document.getElementById('cid').value;
				for(var x=0;x<options.length;x++) {
					payload += '\n' + options[x].text;
				}
				saveConfiguration('template',payload);
				$('#multi_template').modal('toggle');
				document.getElementById("landing_hdr").style.display = "none";
				document.getElementById("landing").style.display = "none";
				document.getElementById("multi_ids").style.display = "block";
			}
			else {
				alert('Please correct the following errors:\n\n' + errors);
			}
		}
		else if(fn == 'add') {
			if(document.getElementById('template_icao').value.length == 4) {
				var option = document.createElement("option");
				option.text = document.getElementById('template_icao').value;
				option.value = 1; // I need to fix this...
				document.getElementById('template_aflds').add(option);
				document.getElementById('template_icao').value = "";
			}
			else {
				alert('ICAO airfield identifier must be 4 characters in length');
			}
		}
		else if(fn == 'rem') {
			for(var i=document.getElementById('template_aflds').options.length-1;i>=0;i--) {
				if(document.getElementById('template_aflds').options[i].selected) {
					document.getElementById('template_aflds').remove(i);
				}
			}
		}
		else if(fn == 'up') {
			var selected = $("#template_aflds").find(":selected");
			var before = selected.prev();
			if (before.length > 0)
			selected.detach().insertBefore(before);
		}
		else if(fn == 'down') {
			var selected = $("#template_aflds").find(":selected");
			var next = selected.next();
			if (next.length > 0)
				selected.detach().insertAfter(next);
		}
	}
	
	function addTemplateItem(json) {
		json = JSON.parse(json);
		//alert("attempting to append option to list. Template name: " + json.templ_name + " Filename: " + json.filename);
		//alert(json);
		el = document.getElementById('pickMulti');
		var opt = document.createElement('option');
		opt.value = json.filename;
		opt.innerHTML = json.templ_name;
		el.appendChild(opt);
		el.value = json.filename;
	}
	
	function returnToLanding(closeDiv) { // Hides an active display and returns to the landing page
		document.getElementById(closeDiv).style.display = "none";
		document.body.style.backgroundImage = "url('" + document.getElementById("bgimg").value + "')";
		document.getElementById("landing_hdr").style.display = "block";
		document.getElementById("landing").style.display = "table";
		//document.getElementById("landing").style.visibility = "visible";
		if(closeDiv == "multi_ids") {
			document.getElementById("pickMulti").value = "0";
		}
	}
	
	function setActiveRunways(el) { // When in manual control (CIC mode), sets active runways and approach/departure type
		var arr_sel = document.getElementById("arr_rwy");
		var dep_sel = document.getElementById("dep_rwy");
		arr_sel.options.length = 0;
		dep_sel.options.length = 0;
		var apch_types = new Array('VIS','ILS');
		var dep_types = new Array('RV','ROTG');
		if(el.value == "EAST") {
			arr_runways = new Array('8L','9R','10','8R','9L');
			dep_runways = new Array('8R','9L','10','8L','9R');
		}
		else if(el.value == "WEST") {
			arr_runways = new Array('26R','27L','28','26L','27R');
			dep_runways = new Array('26L','27R','28','26R','27L');
		}
		else {
			var arr_runways = new Array();
			var dep_runways = new Array();
		}
		for(var x=0; x<arr_runways.length; x++) {
			for(var y=0; y<apch_types.length; y++) {
				var option = document.createElement("option");
				option.text = arr_runways[x] + ' ' + apch_types[y];
				option.value = arr_runways[x] + ' ' + apch_types[y];
				arr_sel.add(option);
			}
			for(var y=0; y<dep_types.length; y++) {
				var option = document.createElement("option");
				option.text = dep_runways[x] + ' ' + dep_types[y];
				option.value = dep_runways[x] + ' ' + dep_types[y];
				dep_sel.add(option);
			}
		}
		//arr_sel.disabled = false;
		//dep_sel.disabled = false;
	}
	
	function checkDuplicates(el) { // Prevents selection of duplicate approach/departure types for the same runway
		// Placeholder for function to prevent duplicate approach/departure types from being selected.
	}
	
	function manualControl(el) { //Shifts IDS from automatic (populates from network data) to manual (CIC-entered data) control mode
		if(el.checked) {
			document.getElementById('flow').disabled = true;
			document.getElementById('arr_rwy').disabled = true;
			document.getElementById('dep_rwy').disabled = true;
		}
		else {
			document.getElementById('flow').disabled = false;
			document.getElementById('arr_rwy').disabled = false;
			document.getElementById('dep_rwy').disabled = false;
		}
	}
	
	function saveAFLD() { // Saves airfield config settings
		var fta = "OFF";
		var ftd = "OFF";
		var intdep = "OFF";
		var lahso = "OFF";
		var auto = "ON";
		if (document.getElementById("fta").checked) {
			fta = "ON";
		}
		if (document.getElementById("ftd").checked) {
			ftd = "ON";
		}
		document.getElementById("TRIPS_info").innerHTML = "FTA " + fta + "<br/>FTD " + ftd;
		
		if (document.getElementById("ninelm2").checked) {
			intdep = "ON";
		}
		else {
			intdep = "OFF";
		}
		if (document.getElementById("lahso").checked) {
			lahso = "ON";
		}
		else {
			lahso = "OFF";
		}
		if (document.getElementById("AutoIDS").checked) {
			auto = "ON";
		}
		else {
			auto = "OFF";
		}
		var afld = "9L@M2 " + intdep + "<br>LAHSO " + lahso;
		document.getElementById("AFLD_info").innerHTML = afld;
		afld += "<br>AUTO " + auto;
		document.getElementById("CIC_info").innerHTML = document.getElementById("CIC_text").value;
		$('#AFLD').modal('toggle');
		saveConfiguration('trips',document.getElementById("TRIPS_info").innerHTML);
		saveConfiguration('afld',afld);
		var arrivals = getSelectValues(document.getElementById("arr_rwy")).toString();
		var departures = getSelectValues(document.getElementById("dep_rwy")).toString();
		saveConfiguration('flow','\n' + document.getElementById("flow").value + '\n' + arrivals + '\n' + departures);
		saveConfiguration('cic',document.getElementById("CIC_text").value);
	}
	function savePIREP() { // Saves a newly-entered PIREP
		// Validate first!
		var valid = true;
		// Clear previous validation
		clearPirepValidation();
		
		if(document.getElementById("location").value.length < 3) {
			valid = false;
			document.getElementById("location").classList.add("is-invalid");
		}
		else {
			document.getElementById("location").classList.add("is-valid");
		}
		if(document.getElementById("time").value.length < 4) {
			valid = false;
			document.getElementById("time").classList.add("is-invalid");
		}
		else {
			document.getElementById("time").classList.add("is-valid");
		}
		if(document.getElementById("altitude").value.length < 3) {
			valid = false;
			document.getElementById("altitude").classList.add("is-invalid");
		}
		else {
			document.getElementById("altitude").classList.add("is-valid");
		}
		if(document.getElementById("aircraft").value.length < 3) {
			valid = false;
			document.getElementById("aircraft").classList.add("is-invalid");
		}
		else {
			document.getElementById("aircraft").classList.add("is-valid");
		}
		if(document.getElementById("conditions").value.length < 1) {
			valid = false;
			document.getElementById("conditions").classList.add("is-invalid");
		}
		else {
			document.getElementById("conditions").classList.add("is-valid");
		}
		
		if (valid) {
			var pirep_string = '/' + document.getElementById("urgency").value;
			pirep_string += ' /OV ' + document.getElementById("location").value;
			pirep_string += ' /TM ' + document.getElementById("time").value;
			pirep_string += ' /' + document.getElementById("altitude").value;
			pirep_string += ' /TP ' + document.getElementById("aircraft").value;
			pirep_string += ' /RM ' + document.getElementById("conditions").value;
			pirep_string += '\r';
			if(document.getElementById("PIREP_info").innerHTML == "No PIREPs to display") {
				document.getElementById("PIREP_info").innerHTML = pirep_string;
			}
			else {
				document.getElementById("PIREP_info").innerHTML = pirep_string + document.getElementById("PIREP_info").innerHTML;
			}
			$('#PIREP').modal('toggle');
			saveConfiguration('pirep',pirep_string.replace('/RM','/R')); // String replace deals with the /RM HTTP server error
			document.getElementById("pirep_entry").reset();
			clearPirepValidation();
		}
	}
	
	function clearPirepValidation() { // Resets PIREP validation tooltips
		var fields = new Array("location","time","altitude","aircraft","conditions");
		for(var x=0;x<fields.length;x++) {
			document.getElementById(fields[x]).classList.remove("is-valid");
			document.getElementById(fields[x]).classList.remove("is-invalid");
		}		
	}
	
	function updateCtrlPos() { // Saves controller position/configuration data
		// TODO: Make the positions array global so it can be used by multiple functions and not duplicated
		var positions = new Array("LC-1","LC-2","LC-3","LC-4","LC-5","GC-N","GC-C","GC-S","GM","CD-1","CD-2","FD","N","S","I","P","F","X","G","Q","O","V","A","H","D","L","Y","M","W","Z","R","E","3E");
		var controllers = "";
		for(var x=0;x<positions.length;x++) {
			if(controllers.length > 0)
				controllers += "|";
			controllers += document.getElementById(positions[x]).value;
		}
		saveConfiguration('controllers',controllers);
	}
	
	function saveTMU() { // Saves user-entered TMU notes
		document.getElementById("TMU_info").innerHTML = linkify(document.getElementById("TMU_text").value);
		$('#TMU').modal('toggle');
		saveConfiguration('tmu',document.getElementById("TMU_text").value);
	}
	
	function saveA80CIC() { // Saves user-entered A80 CIC notes
		document.getElementById("A80_CIC_info").innerHTML = document.getElementById("A80_CIC_text").value;
		$('#CIC').modal('toggle');
		saveConfiguration('a80cic',document.getElementById("A80_CIC_text").value);
	}
	
	function acknowledgeAlert(el) { // Clears change notification upon user ack
		el.classList.remove("alert");
		el.classList.remove("alert-danger");
	}
	
	function refreshData(init=false,template='0') { // Fetches current dataset from network and server and inits display update
		//if(!init) { alert("Data refresh requested, template " + template); }
		if(init) {
			//loadingNotice();
		}
		var xhttp;
		xhttp = new XMLHttpRequest();
		xhttp.onreadystatechange = function() {
			if (this.readyState == 4 && this.status == 200) {
				if(!!document.getElementById('json_test_dump')) {
					document.getElementById('json_test_dump').innerHTML = xhttp.responseText; // Dump the full JSON into a div
				}
				var reply = xhttp.responseText;
				var error = "";
				// Capture errors from PHP reply, prevent JS errors
				if(reply.substring(0,1) != '{') { // JSON start with '{', lack of this means there is error text before the JSON
					error = reply.substring(0,reply.indexOf('{')); // Capture the error text
					reply = reply.substring(reply.indexOf('{')+1); // Trim the error off of the JSON so we can use it normally
				}
				//alert(reply);
				updateIDSFields(init,reply); // Send this JSON to another function for parse and display
				//updateIDSFields(init,xhttp.responseText); // Send this JSON to another function for parse and display
				if(error.length > 0) { // An error occurred - notify the user
					document.getElementById('alert').classList.add('alert-warning');
					document.getElementById('alert_text').innerHTML = "A data refresh error occurred. Some vIDS fields may contain outdated information.";
				}
			}
			else {
			}
		};
		//alert(document.getElementById('live').checked);
		var liveData = true;
		if(!!document.getElementById('live')) {
			liveData = document.getElementById('live').checked;
		}
		//xhttp.open("GET", "ajax_refresh.php?live=" + liveData, true); 
		//alert(template);
		xhttp.open("GET", "ajax_refresh.php?live=" + liveData + "&template=" + template, true); 
		xhttp.send(); 
		//if(init) { alert("Initial load data pull complete"); }
		if(init) { // Check for browser type/capabilities and alert the user, if necessary
			browser_detection();
		}
	}

	function updateIDSFields(init,data) { // Called by refreshData() - updates all data fields with info retrieved from AJAX
		//alert(data);
		var json = JSON.parse(data);
		var changes = false;
		// Set Tower IDS fields
		//init = false; // For testing only, this needs to be removed
		changes = changeDetection(init,changes,document.getElementById("atis_code").innerHTML,json.airfield_data['KATL']['atis_code'],"atis_code");
		document.getElementById("atis_code").innerHTML = json.airfield_data['KATL']['atis_code'];
		changes = changeDetection(init,changes,document.getElementById("metar").innerHTML,json.airfield_data['KATL']['metar'],"metar");
		document.getElementById("metar").innerHTML = json.airfield_data['KATL']['metar'];
		changes = changeDetection(init,changes,document.getElementById("traffic_flow").innerHTML,json.airfield_data['KATL']['traffic_flow'],"traffic_flow");
		document.getElementById("traffic_flow").innerHTML = json.airfield_data['KATL']['traffic_flow'];
		
		var departure_rwys = "";
		for(var x=0;x<json.airfield_data['KATL']['dep_rwys'].length;x++) {
			departure_rwys += json.airfield_data['KATL']['dep_type'] + " " + json.airfield_data['KATL']['dep_rwys'][x] + "<br/>";
		}
		//changes = changeDetection(init,changes,document.getElementById("local_dep_rwys").innerHTML,departure_rwys,"local_dep_rwys");
		document.getElementById("local_dep_rwys").innerHTML = departure_rwys;
		
		// Departure splits
		var origDepSplit = document.getElementById("split_dep_rwys").innerHTML;
		if(json.airfield_data['KATL']['traffic_flow'] == "EAST") {
			document.getElementById("splits_rwy_1").innerHTML = document.getElementById("splits_rwy_id_1").value = "8R/L";
			document.getElementById("splits_rwy_2").innerHTML = document.getElementById("splits_rwy_id_2").value = "9R/L";
			document.getElementById("splits_rwy_3").innerHTML = document.getElementById("splits_rwy_id_3").value = "10";
		}
		else if(json.airfield_data['KATL']['traffic_flow'] == "WEST") {
			document.getElementById("splits_rwy_1").innerHTML = document.getElementById("splits_rwy_id_1").value = "26R/L";
			document.getElementById("splits_rwy_2").innerHTML = document.getElementById("splits_rwy_id_2").value = "27R/L";
			document.getElementById("splits_rwy_3").innerHTML = document.getElementById("splits_rwy_id_3").value = "28";
		}
		//alert(json.splits[0][0]);
		if(!$('#DepartureSplit').is(':visible')) { // This conditional prevents the refresh script from updating data entry fields when a modal is in use
	
		for(var i=1; i<4; i++) {
			document.getElementById("splits_n1_" + i).checked = valueToCheckbox(json.splits[i-1][1]);
			document.getElementById("splits_n1t_" + i).value = json.splits[i-1][2];
			document.getElementById("splits_n2_" + i).checked = valueToCheckbox(json.splits[i-1][3]);
			document.getElementById("splits_n2t_" + i).value = json.splits[i-1][4];
			document.getElementById("splits_w2_" + i).checked = valueToCheckbox(json.splits[i-1][5]);
			document.getElementById("splits_w2t_" + i).value = json.splits[i-1][6];
			document.getElementById("splits_w1_" + i).checked = valueToCheckbox(json.splits[i-1][7]);
			document.getElementById("splits_w1t_" + i).value = json.splits[i-1][8];
			document.getElementById("splits_s2_" + i).checked = valueToCheckbox(json.splits[i-1][9]);
			document.getElementById("splits_s2t_" + i).value = json.splits[i-1][10];
			document.getElementById("splits_s1_" + i).checked = valueToCheckbox(json.splits[i-1][11]);
			document.getElementById("splits_s1t_" + i).value = json.splits[i-1][12];
			document.getElementById("splits_e1_" + i).checked = valueToCheckbox(json.splits[i-1][13]);
			document.getElementById("splits_e1t_" + i).value = json.splits[i-1][14];
			document.getElementById("splits_e2_" + i).checked = valueToCheckbox(json.splits[i-1][15]);
			document.getElementById("splits_e2t_" + i).value = json.splits[i-1][16];
		}
		}
		configDepSplit(false, true); // Recycle the display, but don't save
		changes = changeDetection(init,changes,origDepSplit,document.getElementById("split_dep_rwys").innerHTML,"split_dep_rwys");
		
		var arrival_rwys = "";
		for(var x=0;x<json.airfield_data['KATL']['apch_rwys'].length;x++) {
			arrival_rwys += json.airfield_data['KATL']['apch_type'] + " " + json.airfield_data['KATL']['apch_rwys'][x] + "<br/>";
		}
		//changes = changeDetection(init,changes,document.getElementById("local_arr_rwys").innerHTML,arrival_rwys,"local_arr_rwys");
		document.getElementById("local_arr_rwys").innerHTML = arrival_rwys;
		// Set controller position combines in select boxes
		var controllers = json.controllers.split("|");
		var positions = new Array("LC-1","LC-2","LC-3","LC-4","LC-5","GC-N","GC-C","GC-S","GM","CD-1","CD-2","FD","N","S","I","P","F","X","G","Q","O","V","A","H","D","L","Y","M","W","Z","R","E","3E");
		//var controllerPos = "";
		for(var x=0; x<controllers.length;x++) {
			//controllerPos += "Position: " + positions[x] + " Controller selected: " + controllers[x] + "\n";
			changes = changeDetection(init,changes,document.getElementById(positions[x]).value,controllers[x],positions[x]);
			changes = changeDetection(init,changes,document.getElementById(positions[x]).value,controllers[x],positions[x] + "_disp");
			selectOption(positions[x],controllers[x]);
			document.getElementById(positions[x] + "_disp").value = (controllers[x] == '.' ? '' : controllers[x]);
		}
		//alert(changes);
		// Set text fields
		if(!json.pirep.includes('No PIREPs to display')) { // Only show change detection if something new happens, not simply if everything expires
			changes = changeDetection(init,changes,document.getElementById("PIREP_info").innerHTML.replace(/(\r\n|\n|\r)/gm,""),json.pirep.replace(/(\r\n|\n|\r)/gm,""),"PIREP_info");
		}
		//alert("Current: \"" + document.getElementById("PIREP_info").innerHTML + "\"\nUpdate: \"" + json.pirep + "\"");
		document.getElementById("PIREP_info").innerHTML = json.pirep; // Display-only (entries auto-timeout)
		changes = changeDetection(init,changes,unlinkify(document.getElementById("TMU_info").innerHTML),json.tmu,"TMU_info");
		//var tmuText = json.tmu.map(i => i.replace(/\n/g, '<br />')).join('');
		//alert(json.tmu);
		//alert(unlinkify(document.getElementById("TMU_info").innerHTML));
		document.getElementById("TMU_info").innerHTML = linkify(json.tmu); //.replaceAll(/\n/g, '<br />')); // Display
		if(!$('#TMU').is(':visible')) { // This conditional prevents the refresh script from updating data entry fields when a modal is in use
			document.getElementById("TMU_text").innerHTML = json.tmu // Data entry
		}
		if(!$('#A80_CIC_info').is(':visible')) { // Only do change detection on visible elements
			changes = changeDetection(init,changes,document.getElementById("A80_CIC_info").innerHTML,json.a80cic,"A80_CIC_info");
		}
		document.getElementById("A80_CIC_info").innerHTML = json.a80cic;
		if(!$('#CIC').is(':visible')) { // This conditional prevents the refresh script from updating data entry fields when a modal is in use
			document.getElementById("A80_CIC_text").value = json.a80cic; // Data entry
		}		
		
		changes = changeDetection(init,changes,document.getElementById("TRIPS_info").innerHTML,json.trips['raw'],"TRIPS_info");
		document.getElementById("TRIPS_info").innerHTML = json.trips['raw']; // Display
		//document.getElementById("fta").checked = json.trips['FTA']; // Data entry
		//alert("FTA: " + json.trips['FTA'] + "\nFTD: " + json.trips['FTD']);
		//document.getElementById("ftd").checked = json.trips['FTD']; // Data entry
		//document.getElementById("ninelm2").checked = json.config['9L@M2']; // Data entry
		//document.getElementById("lahso").checked = json.config['LAHSO']; // Data entry
		//document.getElementById("AutoIDS").checked = json.config['AUTO']; // Data entry
		/*
		if(!json.config['AUTO']) {
			document.getElementById("flow").disabled = false;
			document.getElementById("arr_rwy").disabled = false;
			document.getElementById("dep_rwy").disabled = false;
		}
		*/
		/*
		if(json.config['AUTO']) {
			document.getElementById("flow").disabled = true;
			document.getElementById("arr_rwy").disabled = true;
			document.getElementById("dep_rwy").disabled = true;
		}
		*/
		//alert("." + json.airfield_data['KATL']['traffic_flow'].trim() + ".");
		/*
		document.getElementById("flow").value = json.airfield_data['KATL']['traffic_flow'].trim();
		setActiveRunways(document.getElementById("flow"));
		for (var i = 0; i < document.getElementById("arr_rwy").options.length; i++) {
			document.getElementById("arr_rwy").options[i].selected = json.airfield_data['KATL']['apch_rwys'].indexOf(document.getElementById("arr_rwy").options[i].value) >= 0;
		}
		for (var i = 0; i < document.getElementById("dep_rwy").options.length; i++) {
			document.getElementById("dep_rwy").options[i].selected = json.airfield_data['KATL']['dep_rwys'].indexOf(document.getElementById("dep_rwy").options[i].value) >= 0;
		}
		*/
		//alert("Current: \"" + document.getElementById("AFLD_info").innerHTML + "\"\nUpdate: \"" + json.config['raw'] + "\"");
		changes = changeDetection(init,changes,document.getElementById("AFLD_info").innerHTML,json.config['raw'],"AFLD_info");
		document.getElementById("AFLD_info").innerHTML = json.config['raw']; // Display
		if(!$('#CIC_info').is(':visible')) { // Only do change detection on visible elements
			changes = changeDetection(init,changes,document.getElementById("CIC_info").innerHTML,json.cic,"CIC_info");
		}
		//changes = changeDetection(init,changes,document.getElementById("CIC_info").innerHTML,json.cic,"CIC_info");
		//alert("CIC Info\nIn DOM: \"" + document.getElementById("CIC_info").innerHTML + "\"\nFrom file: \"" + json.cic.replace(/(\n)/gm,"") + "\"");
		document.getElementById("CIC_info").innerHTML = json.cic; // Display
		//document.getElementById("CIC_text").innerHTML = json.cic; // Data entry
		if(!$('#AFLD').is(':visible')) { // This conditional prevents the refresh script from updating data entry fields when a modal is in use
			document.getElementById("flow").value = json.airfield_data['KATL']['traffic_flow'].trim();
			setActiveRunways(document.getElementById("flow"));
			if(json.airfield_data['KATL']['apch_rwys'].length != undefined) {
			for (var i = 0; i < document.getElementById("arr_rwy").options.length; i++) {
				document.getElementById("arr_rwy").options[i].selected = json.airfield_data['KATL']['apch_rwys'].indexOf(document.getElementById("arr_rwy").options[i].value) >= 0;
			}
			}
			if(json.airfield_data['KATL']['dep_rwys'].length != undefined) {
			for (var i = 0; i < document.getElementById("dep_rwy").options.length; i++) {
				document.getElementById("dep_rwy").options[i].selected = json.airfield_data['KATL']['dep_rwys'].indexOf(document.getElementById("dep_rwy").options[i].value) >= 0;
			}
			}
			document.getElementById("fta").checked = json.trips['FTA']; // Data entry
			document.getElementById("ftd").checked = json.trips['FTD']; // Data entry
			document.getElementById("ninelm2").checked = json.config['9L@M2']; // Data entry
			document.getElementById("lahso").checked = json.config['LAHSO']; // Data entry
			document.getElementById("CIC_text").innerHTML = json.cic; // Data entry
			document.getElementById("AutoIDS").checked = json.config['AUTO']; // Data entry
		}
		if(!json.config['AUTO']) {
			document.getElementById("flow").disabled = false;
			document.getElementById("arr_rwy").disabled = false;
			document.getElementById("dep_rwy").disabled = false;
		}
		//alert(json.gates);
		if(json.gates.length == 3) {
			changes = changeDetection(init,changes,document.getElementById("dep_gate_n").innerHTML,json.gates[0],"dep_gate_n");
			changes = changeDetection(init,changes,document.getElementById("dep_gate_s").innerHTML,json.gates[1],"dep_gate_s");
			changes = changeDetection(init,changes,document.getElementById("dep_gate_i").innerHTML,json.gates[2],"dep_gate_i");
			document.getElementById("dep_gate_n").innerHTML = json.gates[0];	
			document.getElementById("dep_gate_s").innerHTML = json.gates[1];
			document.getElementById("dep_gate_i").innerHTML = json.gates[2];
			//var txt_overrun = "";
			if ($('#dep_gate_n')[0].scrollWidth >  $('#dep_gate_n_container').innerWidth()) { // When true, the text overruns the box, so we want to marquee
				document.getElementById("dep_gate_n_container").classList.add("start_marquee");
				//txt_overrun += "N";
			}
			else {
				document.getElementById("dep_gate_n_container").classList.remove("start_marquee");
			}
			if ($('#dep_gate_s')[0].scrollWidth >  $('#dep_gate_s_container').innerWidth()) { // When true, the text overruns the box, so we want to marquee
				document.getElementById("dep_gate_s_container").classList.add("start_marquee");
				//txt_overrun += "S";
			}
			else {
				document.getElementById("dep_gate_s_container").classList.remove("start_marquee");
			}
			if ($('#dep_gate_i')[0].scrollWidth >  $('#dep_gate_i_container').innerWidth()) { // When true, the text overruns the box, so we want to marquee
				document.getElementById("dep_gate_i_container").classList.add("start_marquee");
				//txt_overrun += "I";
			}
			else {
				document.getElementById("dep_gate_i_container").classList.remove("start_marquee");
			}
/*
			alert("N - Text width: " + $('#dep_gate_n')[0].scrollWidth + " Div width: " + $('#dep_gate_n_container').innerWidth() + 
			"\nS - Text width: " + $('#dep_gate_s')[0].scrollWidth + " Div width: " + $('#dep_gate_s_container').innerWidth() + 
			"\nI - Text width: " + $('#dep_gate_i')[0].scrollWidth + " Div width: " + $('#dep_gate_i_container').innerWidth() + 
			"\n Overruns: " + txt_overrun);
*/
//			document.getElementById("dep_gate_n").value = json.gates[0];	
//			document.getElementById("dep_gate_s").value = json.gates[1];
//			document.getElementById("dep_gate_i").value = json.gates[2];
/*
			$('#dep_gate_n').marquee({ speed: 20 });
			$('#dep_gate_s').marquee({ speed: 20 });
			$('#dep_gate_i').marquee({ speed: 20 });
*/
			if(!$('#DepartureGates').is(':visible')) { // This conditional prevents the refresh script from updating data entry fields when a modal is in use
				document.getElementById("depGateN").value = json.gates[0];
				document.getElementById("depGateS").value = json.gates[1];
				document.getElementById("depGateI").value = json.gates[2];
			}	
		}

		// Set A80 satellite and outer field info
		var underlying_fields = new Array("KPDK","KFTY","KMGE","KRYY","KLZU","KMCN","KWRB","KAHN","KCSG"); // I intentionally left LSF out... we never use it
		//var underlying_fields = new Array("KPDK"); // For testing only.. real world use the line above to get all of the satellites
		var openCloseStatus = "";
		for(var y=0;y<underlying_fields.length;y++) {
			var open_closed = "CLOSED";
			if(underlying_fields[y] in json.airfield_data) {
			document.getElementById(underlying_fields[y] + "_atis_code").innerHTML = json.airfield_data[underlying_fields[y]].atis_code;
			//if(json.airfield_data[underlying_fields[y]].atis_code != "--") {
				//open_closed = "OPEN";
			//}
			// New schema to make field OPEN/CLOSED status reflect real-world tower operating hours
			var curDate = new Date();
			var dayofweek = curDate.getUTCDay(); // 0 = Sunday, 1 = Monday
			var cur24time = curDate.getUTCHours() * 100 + curDate.getUTCMinutes(); // Get UTC time and format HHmm
			var opHours = document.getElementById(underlying_fields[y] + "_hours_mf").value;
			//alert(underlying_fields[y] + ': ' + document.getElementById(underlying_fields[y] + "_hours_mf").value);
			if ((dayofweek == 0)||(dayofweek == 6)) { // Sunday(0) or Saturday(6)
				opHours = document.getElementById(underlying_fields[y] + "_hours_ss").value;
			}
			opHours = opHours.split('-');
			var opHoursStart = parseInt(opHours[0]);
			var opHoursEnd = parseInt(opHours[1]);
			if((document.getElementById(underlying_fields[y] + "_hours_dstAdjust").value)&&(checkDST())) { // Adjust for DST
				opHoursStart -= 100;
				opHoursEnd -= -100;
			}
			if(opHoursEnd < opHoursStart) { // This happens when a tower closes after 0000Z
				opHoursEnd += 2400;
			}
			if((cur24time > opHoursStart)&&(cur24time < opHoursEnd)||(cur24time < opHoursStart)&&(cur24time < opHoursEnd)) { // Airfield is open
				open_closed = "OPEN";
				//alert(underlying_fields[y] + ' Current UTC time: ' + cur24time + ' Field opening time: ' + opHoursStart + ' Field closing time: ' + opHoursEnd + ' Field is: ' + open_closed);				
			}
			openCloseStatus += underlying_fields[y] + ' Current UTC time: ' + cur24time + ' Field opening time: ' + opHoursStart + ' Field closing time: ' + opHoursEnd + ' Field is: ' + open_closed + '\n';
			document.getElementById(underlying_fields[y] + "_open_closed").innerHTML = open_closed;
			// New schema to display del/gnd/twr status
			//alert(json.airfield_data[underlying_fields[y]].tower_cab.del);
			if(json.airfield_data[underlying_fields[y]].tower_cab.del) {
				//alert(underlying_fields[y] + ' delivery online ' + document.getElementById(underlying_fields[y] + "_online_del").classList);
				document.getElementById(underlying_fields[y] + "_online_del").classList.add('badge-del');
				//alert(underlying_fields[y] + ' delivery online ' + document.getElementById(underlying_fields[y] + "_online_del").classList);
			}
			else {
				document.getElementById(underlying_fields[y] + "_online_del").classList.remove('badge-del');
			}
			if(json.airfield_data[underlying_fields[y]].tower_cab.gnd) {
				document.getElementById(underlying_fields[y] + "_online_gnd").classList.add('badge-gnd');
			}
			else {
				document.getElementById(underlying_fields[y] + "_online_gnd").classList.remove('badge-gnd');
			}			
			if(json.airfield_data[underlying_fields[y]].tower_cab.twr) {
				document.getElementById(underlying_fields[y] + "_online_twr").classList.add('badge-twr');
			}
			else {
				document.getElementById(underlying_fields[y] + "_online_twr").classList.remove('badge-twr');				
			}
			document.getElementById(underlying_fields[y] + "_metar").innerHTML = json.airfield_data[underlying_fields[y]].metar;
			/*
			var active_rwys = "--";
			if(json.airfield_data[underlying_fields[y]].dep_rwys != null) {
				for(var z=0;z<json.airfield_data[underlying_fields[y]].dep_rwys.length;z++) {
					active_rwys += json.airfield_data[underlying_fields[y]].dep_rwys[z] + " ";
				}
			}
			*/
			// New scheme to display active runways/traffic flow with the option for manual override
			var active_apch_rwys = "--";
			var override = false;
			var afld = underlying_fields[y];
			if(json.override.hasOwnProperty(afld)) { // An override exists, so display it
				active_apch_rwys = json.override[afld];
				override = json.override[afld];
			}
			else if(json.airfield_data[afld].apch_rwys != "") { // Display generated active runway and approach type
				for(var rwy in json.airfield_data[afld]['apch_rwys']) {
					if(active_apch_rwys.length > 0) {
						active_apch_rwys += ", ";
					}
					active_apch_rwys += json.airfield_data[afld]['apch_rwys'][rwy] + " " + json.airfield_data[afld]['apch_type'];
				}
			}
			document.getElementById(underlying_fields[y] + "_runway").innerHTML = active_apch_rwys;
			document.getElementById(underlying_fields[y] + "_override").value = override;
			}
		}
		//alert(openCloseStatus);
		// Set MULTI-IDS fields
		//var multi_disp_str = '<div class=\"landing_menu\"><a onclick=\"returnToLanding(\'multi_ids\');\"><i class=\"fas fa-bars\"></i></a></div>';
		if((document.getElementById("ad").value == '1')||(document.getElementById("cid").value == json.template_creator)) {
			document.getElementById("templateDeleteMenu").classList.remove('disabled');
		}
		else {
			document.getElementById("templateDeleteMenu").classList.add('disabled');
		}
		var multi_disp_str = '';
		//alert("KATL approach type: " + json.airfield_data['KATL']['apch_rwys'].join(", "));
		//alert("Resetting Multi-IDS airfields..." + JSON.stringify(json.template));
		//var airfield_listing = "";
		//for(afld in json.airfield_data.template) {
		if(json.template === null) { // Refresh isn't finished... show a loading message
			multi_disp_str = "<div class=\"row\"><div class=\"col-lg\"><h3>Multi-IDS display is loading... please wait</h3></div></div>";
		}
		else {
		//var defaultAirfieldNoChange = "alert('Configuration for this airfield must be set through the local vIDS display by the tower CIC.');";
		// Note: I had to break-out refresh vs redraw logic below to allow users to click/drag/reorder airfields
		// Create array of all airfields displayed by walking DOM and getting IDs
		var nextAfld = document.getElementById('multi_ids_data').firstChild;
		var displayedAirfields = new Array();
		while(nextAfld) {
			displayedAirfields.push(nextAfld.id);
			nextAfld = nextAfld.nextSibling;
		}
		displayedAirfields = displayedAirfields.map(function(x){ return x.toUpperCase(); }).sort();
		templateAirfields = Object.values(json.template).map(function(x){ return x.toUpperCase(); }).sort();
		/*
		if(JSON.stringify(displayedAirfields) === JSON.stringify(templateAirfields)) { // Displayed and template are the same, so just refresh data
			//alert(displayedAirfields + "\n" + templateAirfields);
			//alert('refresh');
			for(afld in displayedAirfields) {
				afld = displayedAirfields[afld];
				//alert(afld);
				document.getElementById(afld + '_ATIS').innerHTML = json.airfield_data[afld].atis_code;
				document.getElementById(afld + '_WX').innerHTML = json.airfield_data[afld].winds + "&nbsp;&nbsp;&nbsp;" + json.airfield_data[afld].altimeter;
				document.getElementById(afld + '_METAR').innerHTML = json.airfield_data[afld].metar;
				var active_rwy_apch = "";
				// New scheme to display active runways/traffic flow with the option for manual override
				var override = false;
				if(json.override.hasOwnProperty(afld)) { // An override exists, so display it
					active_rwy_apch = json.override[afld];
					override = json.override[afld];
				}
				else if(json.airfield_data[afld].apch_rwys != "") { // Display generated active runway and approach type
					for(var rwy in json.airfield_data[afld]['apch_rwys']) {
						if(active_rwy_apch.length > 0) {
							active_rwy_apch += ", ";
						}
						active_rwy_apch += json.airfield_data[afld]['apch_rwys'][rwy] + " " + json.airfield_data[afld]['apch_type'];
					}
				}
				document.getElementById(afld + '_RWYAPCH').innerHTML = active_rwy_apch;
				var rvr = "";
				for(var x=0; x<json.airfield_data[afld].rvr_display.length; x++) {
					rvr += json.airfield_data[afld].rvr_display[x] + "<br/>";
				}
				document.getElementById(afld + '_RVR').innerHTML = rvr;
			}
		}
		
		else { // Redraw multi-ids view
		*/
		if(JSON.stringify(displayedAirfields) !== JSON.stringify(templateAirfields)) { // Displayed and template are not the same, so just redraw grid
		for(afld in json.template) { //json.airfield_data
			afld = json.template[afld];
			afld = afld.toUpperCase();
			multi_disp_str += "<div id=\"" + afld + "\" class=\"row moveable\" draggable=\"true\" ondragstart=\"dragStarted(event);\" ondragover=\"draggingOver(event);\" ondrop=\"dropped(event);\">";
			multi_disp_str += "<div class=\"col-lg-1\"><div class=\"vert_id\">" + json.airfield_data[afld].icao_id.substr(1,1).toUpperCase() + "</div><div class=\"vert_id\">" + json.airfield_data[afld].icao_id.substr(2,1).toUpperCase() + "</div><div class=\"vert_id\">" + json.airfield_data[afld].icao_id.substr(3,1).toUpperCase() + "</div></div>";

//			multi_disp_str += "<div id=\"" + afld + "_ATIS\" class=\"col-lg-1 atis_code_m\">" + json.airfield_data[afld].atis_code + "</div>";
			multi_disp_str += "<div id=\"" + afld + "_ATIS\" class=\"col-lg-1 atis_code_m\"></div>";
/*			
			var active_rwy_apch = "";
			// New scheme to display active runways/traffic flow with the option for manual override
			var override = false;
			if(json.override.hasOwnProperty(afld)) { // An override exists, so display it
				active_rwy_apch = json.override[afld];
				override = json.override[afld];
			}
			else if(json.airfield_data[afld].apch_rwys != "") { // Display generated active runway and approach type
				for(var rwy in json.airfield_data[afld]['apch_rwys']) {
					if(active_rwy_apch.length > 0) {
						active_rwy_apch += ", ";
					}
					active_rwy_apch += json.airfield_data[afld]['apch_rwys'][rwy] + " " + json.airfield_data[afld]['apch_type'];
				}
			}

			else {
				//active_rwy_apch = json.airfield_data[afld].apch_rwys.join(", ");
			}
*/
/*
			multi_disp_str += "<div class=\"col-lg-2 arrival_info\"><div id=\"" + afld + "_RWYAPCH\" class=\"apch_type\">" + active_rwy_apch + "</div><div></div>";
			multi_disp_str += "<div id=\"" + afld + "_WX\" class=\"wx\">" + json.airfield_data[afld].winds + "&nbsp;&nbsp;&nbsp;" + json.airfield_data[afld].altimeter + "</div>" + generateDropdown(afld,defaultAirfield) + "</div>";
			multi_disp_str += "<div id=\"" + afld + "_METAR\" class=\"col-lg-5 metar_m\">" + json.airfield_data[afld].metar + "</div>";
			multi_disp_str += "<div class=\"col-lg-3 metar_m\">RY RVR<div id=\"" + afld + "_RVR\" class=\"rvr\">";
*/
			multi_disp_str += "<div class=\"col-lg-2 arrival_info\"><div id=\"" + afld + "_RWYAPCH\" class=\"apch_type\"></div><div></div>";
			multi_disp_str += "<div id=\"" + afld + "_WX\" class=\"wx\"></div>" + generateDropdown(afld,defaultAirfield);
			multi_disp_str += "<span class=\"cab_status\">&nbsp;&nbsp;<span id=\"" + afld + "_multi_online_del\" class=\"badge badge-secondary\">D</span>&nbsp;<span id=\"" + afld + "_multi_online_gnd\" class=\"badge badge-secondary\">G</span>&nbsp;<span id=\"" + afld + "_multi_online_twr\" class=\"badge badge-secondary\">T</span></span>";
			multi_disp_str += "</div>";
			multi_disp_str += "<div id=\"" + afld + "_METAR\" class=\"col-lg-5 metar_m\"></div>";
			multi_disp_str += "<div class=\"col-lg-3 metar_m\">RY RVR<div id=\"" + afld + "_RVR\" class=\"rvr\">";
/*			for(var x=0; x<json.airfield_data[afld].rvr_display.length; x++) {
				multi_disp_str += json.airfield_data[afld].rvr_display[x] + "<br/>";
			}
*/
		multi_disp_str += "	<input type=\"hidden\" id=\"" + afld + "_override\" value=\"" + override + "\" /></div></div></div>";
		//airfield_listing += json.airfield_data[afld].icao_id.toUpperCase() + ", ";
		}
		document.getElementById('multi_ids_data').innerHTML = multi_disp_str;
		}
		// Refresh data fields
		//while(document.getElementById('multi_ids_data').innerHTML == '') {
			// Wait... causes the code to delay until the template is loaded into the DOM ;)
		//}
			//alert(displayedAirfields + "\n" + templateAirfields);
			//alert('refresh');
			for(afld in templateAirfields) {
				afld = templateAirfields[afld];
				if(json.airfield_data[afld] != undefined) { // Sometimes the refresh is too fast for the redraw... this prevents errors
				//alert(afld);
				document.getElementById(afld + '_ATIS').innerHTML = json.airfield_data[afld].atis_code;
				document.getElementById(afld + '_WX').innerHTML = json.airfield_data[afld].winds + "&nbsp;&nbsp;&nbsp;" + json.airfield_data[afld].altimeter;
				document.getElementById(afld + '_METAR').innerHTML = json.airfield_data[afld].metar;
				var active_rwy_apch = "";
				// New scheme to display active runways/traffic flow with the option for manual override
				var override = false;
				if(json.override.hasOwnProperty(afld)) { // An override exists, so display it
					active_rwy_apch = json.override[afld];
					override = json.override[afld];
				}
				else if(json.airfield_data[afld].apch_rwys != "") { // Display generated active runway and approach type
					for(var rwy in json.airfield_data[afld]['apch_rwys']) {
						if(active_rwy_apch.length > 0) {
							active_rwy_apch += ", ";
						}
						active_rwy_apch += json.airfield_data[afld]['apch_rwys'][rwy] + " " + json.airfield_data[afld]['apch_type'];
					}
				}
				document.getElementById(afld + '_RWYAPCH').innerHTML = active_rwy_apch;
				var rvr = "";
				for(var x=0; x<json.airfield_data[afld].rvr_display.length; x++) {
					rvr += json.airfield_data[afld].rvr_display[x] + "<br/>";
				}
				document.getElementById(afld + '_RVR').innerHTML = rvr;
				}
				// Update D/G/T badge colors based on tower cab staffing
				if(json.airfield_data[afld].tower_cab.del) {
					document.getElementById(afld + "_multi_online_del").classList.add('badge-del');
				}
				else {
					document.getElementById(afld + "_multi_online_del").classList.remove('badge-del');
				}
				if(json.airfield_data[afld].tower_cab.gnd) {
					document.getElementById(afld + "_multi_online_gnd").classList.add('badge-gnd');
				}
				else {
					document.getElementById(afld + "_multi_online_gnd").classList.remove('badge-gnd');
				}		
				if(json.airfield_data[afld].tower_cab.twr) {
					document.getElementById(afld + "_multi_online_twr").classList.add('badge-twr');
				}
				else {
					document.getElementById(afld + "_multi_online_twr").classList.remove('badge-twr');				
				}
			}
		}
		//alert(airfield_listing);
		//document.getElementById('multi_ids_data').innerHTML = multi_disp_str;
		if(changes) {
			document.getElementById("acknowledge").style.visibility = "visible";
		}
		document.getElementById('loading').className = "hideLoad"; // If the loading screen is active, hide it
	}
	
	function loadingNotice() { // Moves progress bar in loading notice
		// Initialize progress bar to zero
		document.getElementById('loadingProgress').setAttribute("style","width:0%");
		document.getElementById('loadingProgress').setAttribute("aria-valuenow",0);
		var loadtime = 15; // Seconds
		document.getElementById('loading').className = "showLoad";
		var seconds = 0;
		var t = setInterval(function() {
			if(document.getElementById('loading').className == "hideLoad") {
				clearInterval(t);
			}
			seconds += 0.25;
			var percentage = (seconds/loadtime) * 100;
				document.getElementById('loadingProgress').setAttribute("style","width:" + percentage + "%");
				document.getElementById('loadingProgress').setAttribute("aria-valuenow",percentage);
				//$('#loadingProgress').css('width', percentage+'%').attr('aria-valuenow', percentage);
			if(seconds == loadtime) {
				clearInterval(t);
			}
		},250);
	}
	
	function generateDropdown(afldId,defAfld) {
		var configAfld = "airfieldConfig('" + afldId + "')";
		if(afldId == defAfld) {
			configAfld = "alert('Configuration for this airfield must be set through the local vIDS display by the tower CIC.');";
		}
		var str = "<div class=\"dropdown noclear\"><a href=\"#\" class=\"dropdown-toggle\" data-toggle=\"dropdown\"><i class=\"fas fa-caret-square-down\"></i></a><ul class=\"dropdown-menu\" role=\"menu\"  aria-labelledby=\"dLabel\"><li class=\"dropdown-header\">" + afldId + "</li><li class=\"divider\"></li><li><a href=\"#\" onclick=\"" + configAfld + "\">Airfield Config</a></li><li><a href=\"#PROC\" onclick=\"loadProc('" + afldId + "');\" data-toggle=\"modal\">Instrument Procedures</a></li></ul></div>";
		return str;
	}
	
	function airfieldConfig(afldId) {
		document.getElementById("override_active").checked = false;
		document.getElementById("override_rwy_apch").value = "";
		document.getElementById("ac_afldId").innerHTML = afldId.toUpperCase();
		document.getElementById("override_afld_id").value = afldId.toUpperCase();
		if(document.getElementById(afldId.toUpperCase() + "_override").value != 'false') {
			document.getElementById("override_active").checked = true;
			document.getElementById("override_rwy_apch").value = document.getElementById(afldId.toUpperCase() + "_override").value;
		}
		$('#AirfieldConfig').modal('toggle');
	}
	
	function saveAfldConfigOverride(action) {
		var override = new Array(document.getElementById("override_afld_id").value);
		if(action) { // Save a new override
			override.push(document.getElementById("override_rwy_apch").value);
		}
		else { // Remove an existing override 
			override.push(false);
		}
		//alert(JSON.stringify(override));
		saveConfiguration('override',JSON.stringify(override));
		$('#AirfieldConfig').modal('toggle');
	}
	
	function setDepartureGates(save = false) {
		if(save) {
			// Update fields in IDS and then save the data to file
			document.getElementById("dep_gate_n").innerHTML = "<p><span>" + document.getElementById("depGateN").value + "</span></p>";
			document.getElementById("dep_gate_s").innerHTML = "<p><span>" + document.getElementById("depGateS").value + "</span></p>";
			document.getElementById("dep_gate_i").innerHTML = "<p><span>" + document.getElementById("depGateI").value + "</span></p>";
			var gateConfig = "N:" + document.getElementById("depGateN").value + "\n";
			gateConfig += "S:" + document.getElementById("depGateS").value + "\n";
			gateConfig += "I:" + document.getElementById("depGateI").value;
			saveConfiguration('gates',gateConfig);
			//alert(document.getElementById("dep_gate_n").getElementsByTagName("p")[0].innerHTML);
		}
		$('#DepartureGates').modal('toggle');
	}
	
	function configDepSplit(save = false, refresh = false) {
		if(save || refresh) {
			// Update fields in IDS and then save the data to file
			// First, build display text
			//var splits = new Array(); 
			var saveData = new Array();
			var splits = "<table id=\"splits\">";
			var gates = new Array("n1","n2","w2","w1","s2","s1","e1","e2");
			for(var i=1; i<4 ; i++) {
				var saveRunway = new Array();
				//splits[i] = document.getElementById("splits_rwy_id_" + i).value + " " + document.getElementById("splits_n1_" + i).value + " " + document.getElementById("splits_n1t_" + i).value + " " + document.getElementById("splits_n2_" + i).value + " " + document.getElementById("splits_n2t_" + i).value + " " + document.getElementById("splits_w2_" + i).value + " " + document.getElementById("splits_w2t_" + i).value + " " + document.getElementById("splits_w1_" + i).value + " " + document.getElementById("splits_w1t_" + i).value + " " + document.getElementById("splits_s2_" + i).value + " " + document.getElementById("splits_s2t_" + i).value + " " + document.getElementById("splits_s1_" + i).value + " " + document.getElementById("splits_s1t_" + i).value + " " + document.getElementById("splits_e1_" + i).value + " " + document.getElementById("splits_e1t_" + i).value + " " + document.getElementById("splits_e2_" + i).value + " " + document.getElementById("splits_e2t_" + i).value;
				splits += "<tr><th>" + document.getElementById("splits_rwy_id_" + i).value + "</th>";
				saveRunway.push(document.getElementById("splits_rwy_id_" + i).value);
				for(var j=0; j<gates.length; j++) {
					var gate = "&nbsp;&nbsp;&nbsp;";
					var dir = checkboxToName(document.getElementById("splits_" + gates[j] + "_" + i));
					var fix = document.getElementById("splits_" + gates[j] + "t_" + i).value;
					saveRunway.push(dir);
					saveRunway.push(fix);
					if((dir.length > 0)&&(fix.length > 0)) {
						gate = dir + "+" + fix;
					}
					else {
						gate = dir + fix;
					}
					splits += "<td>" + gate + "</td>";
				}
				splits += "</tr>";
				saveData.push(saveRunway);
			}
			splits += "</table>";
			document.getElementById("split_dep_rwys").innerHTML = splits; 
			//document.getElementById("split_dep_rwys").innerHTML = splits[1] + "<br/>" + splits[2] + "<br/>" + splits[3]; 
			if (save) {
				saveConfiguration('splits',JSON.stringify(saveData));
			}
		}
		if(!refresh) {
			$('#DepartureSplit').modal('toggle');
		}
	}
	
	function checkboxToName(el) {
		if(el.type && el.type === 'checkbox') {
			if(el.checked) {
				return el.name;
			}
		}
		return "";
	}
	
	function valueToCheckbox(val) {
		if(val.length > 0) {
			return true;
		}
		return false;
	}
	
	function selectOption(id, selectValue) {  // Helper function for dealing with select options
		
		let element = document.getElementById(id);
		element.value = selectValue;
	}
	
	function changeDetection(init,ch,val1,val2,el) { // Change detection and alerting system
		if(!init) { // There is no change detection when the IDS is initializing
			if(val1 != val2) {
				addClass = "change";
				//if(document.getElementById(el).nodeName == "SELECT") {
				//	addClass = "";
				//}
				document.getElementById(el).classList.add(addClass);
				return true;
			}
			else {
				return ch;
			}
		}
		else {
			return ch;
		}
	}
	
	function acknowledgeChanges() { // Handles user acknowledgement of changes
		$('.change').removeClass('change');
		document.getElementById("acknowledge").style.visibility = "hidden";
	}
	
	// Make acknowledge button flash
	var backgroundInterval = setInterval(function(){
		$("#acknowledge").toggleClass("backgroundRed");
	},1500)
	
	function saveConfiguration(type,payload) { // Saves configuration data to server
		var xhttp;
		xhttp = new XMLHttpRequest();
		xhttp.onreadystatechange = function() {
			if (this.readyState == 4 && this.status == 200) {
				//alert(xhttp.responseText);
				if(type == 'template') {
					addTemplateItem(xhttp.responseText);
				}
				if(type == 'override') {
					//alert(xhttp.responseText);
				}
			}
			else {
			}
		};
		xhttp.open("GET", "ajax_handler.php?type=" + type + "&cid=" + document.getElementById('cid').value + "&payload=" + encodeURIComponent(payload), true);
		xhttp.send();
	}
	function fetchWeather(icao) { // Retrieves METAR and TAF data from data provider
		var xhttp;
		xhttp = new XMLHttpRequest();
		xhttp.onreadystatechange = function() {
			if (this.readyState == 4 && this.status == 200) {
				document.getElementById('weather_request').innerHTML = xhttp.responseText;
			}
			else {
			}
		};
		xhttp.open("GET", "ajax_weather.php?icao=" + icao, true);
		xhttp.send();
		// Update static images from sources
		document.getElementById("wx_video_s").src = document.getElementById("wx_video_s").src + "?r=" + Math.floor(Math.random() * 1000);
		document.getElementById("wx_gates_s").src = document.getElementById("wx_gates_s").src + "?r=" + Math.floor(Math.random() * 1000);
		document.getElementById("wx_radar_s").src = document.getElementById("wx_radar_s").src + "?r=" + Math.floor(Math.random() * 1000);
		document.getElementById("wx_satellite_s").src = document.getElementById("wx_satellite_s").src + "?r=" + Math.floor(Math.random() * 1000);
		document.getElementById("wx_sigmets_s").src = document.getElementById("wx_sigmets_s").src + "?r=" + Math.floor(Math.random() * 1000);
		document.getElementById("wx_prog_s").src = document.getElementById("wx_prog_s").src + "?r=" + Math.floor(Math.random() * 1000);
	}
	
	function clearStyle(x) { // Removes classes applied to an element
		x.className = '';
	}
	
	// TODO: Remove this plugin code and put it in a seperate JS file - it is not native to this project
	// PDF in modal plugin
	// Removed 6/14/2021 - no longer needed, using embed instead
/*
(function(a){a.createModal=function(b){defaults={title:"",message:"Your Message Goes Here!",closeButton:true,scrollable:false};var b=a.extend({},defaults,b);var c=(b.scrollable===true)?'style="max-height: 420px;overflow-y: auto;"':"";html='<div class="modal fade" id="myModal">';html+='<div class="modal-dialog">';html+='<div class="modal-content">';html+='<div class="modal-header">';html+='<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>';if(b.title.length>0){html+='<h4 class="modal-title">'+b.title+"</h4>"}html+="</div>";html+='<div class="modal-body" '+c+">";html+=b.message;html+="</div>";html+='<div class="modal-footer">';if(b.closeButton===true){html+='<button type="button" class="btn btn-primary" data-dismiss="modal">Close</button>'}html+="</div>";html+="</div>";html+="</div>";html+="</div>";a("body").prepend(html);a("#myModal").modal().on("hidden.bs.modal",function(){a(this).remove()})}})(jQuery);


$(function(){    
    $('.view-pdf').on('click',function(){
        var pdf_link = $(this).attr('href');
        //var iframe = '<div class="iframe-container"><iframe src="'+pdf_link+'"></iframe></div>'
        //var iframe = '<object data="'+pdf_link+'" type="application/pdf"><embed src="'+pdf_link+'" type="application/pdf" /></object>'        
        var iframe = '<object type="application/pdf" data="'+pdf_link+'" width="100%" height="500">No Support</object>'
        $.createModal({
            title: $(this).attr('title'),
            message: iframe,
            closeButton:true,
            scrollable:false
        });
        return false;        
    });    
})
*/
function getSelectValues(select) { // Helper function for multi-select fields
  var result = [];
  var options = select && select.options;
  var opt;

  for (var i=0, iLen=options.length; i<iLen; i++) {
    opt = options[i];

    if (opt.selected) {
      result.push(opt.value || opt.text);
    }
  }
  return result;
}

	function saveBugReport() { // Saves bug reports to RSS feed
		// Validate bug report first to ensure user actually reported something...
		var validationErrors = new Array();
		if(document.getElementById("bug_report_name").value.length < 1) {
			validationErrors.push("Please submit your name or Discord user id with the bug report. This will help us contact you if we need more information about the bug that you found.");
		}
		if(document.getElementById("bug_description").value.length < 1) {
			validationErrors.push("Oops... looks like you forgot to tell us all about that bug that you found. Please provide us with a detailed description of the bug so we can fix it!");
		}
		if(validationErrors.length > 0) { // Validation errors found
			alert(validationErrors.join("\n\n"));
		}
		else { // Form was valid, so save the bug report
			$('#BUG').modal('toggle');
			var xhttp;
			xhttp = new XMLHttpRequest();
			xhttp.onreadystatechange = function() {
				if (this.readyState == 4 && this.status == 200) {
					alert('Thanks for reporting that bug!');
					//document.getElementById("bug_report_name").value = "";
					document.getElementById("bug_description").value = "";
				}
				else {
				}
			};
			var description = document.getElementById("bug_description").value + '<br/>Reported by: ' + document.getElementById("bug_report_name").value;
			//alert(description);
			xhttp.open("GET", "bug_reporting.php?bug_description=" + description, true); 
			xhttp.send(); 
		}
	}
	
	function showAboutHelp() { // Makes the multi-airfield display visible
		$('#about_help').modal('toggle');
	}
	
	function showBugReportReferal(x) {
		$('#' + x).modal('toggle');
		$('#BUG').modal('toggle');
	}
	
	// Code to auto-scroll content in a text input box 
	/*
$(document).ready(function() {
	var interval_val = 2;
	var timeout_ = null;
	timeout_ = setInterval(function() {
    $(".scroll_content").scrollLeft(interval_val);
		interval_val++;
    }, 100);
  });
  */
/*
  $(".scroll_content").on("mouseout", function() {

    clearInterval(timeout_);
    $(this).scrollLeft(0);
  });
*/
// Functions to add marquee functionality to a text-input box
/*
 (function($) {
        $.fn.textWidth = function(){
             var calc = '<span style="display:none">' + $(this).text() + '</span>';
             $('body').append(calc);
             var width = $('body').find('span:last').width();
             $('body').find('span:last').remove();
            return width;
        };

        $.fn.marquee = function(args) {
            var that = $(this);
            var textWidth = that.textWidth(),
                offset = that.width(),
                width = offset,
                css = {
                    'text-indent' : that.css('text-indent'),
                    'overflow' : that.css('overflow'),
                    'white-space' : that.css('white-space')
                },
                marqueeCss = {
                    'text-indent' : width,
                    'overflow' : 'hidden',
                    'white-space' : 'nowrap'
                },
                args = $.extend(true, { count: -1, speed: 1e1, leftToRight: false }, args),
                i = 0,
                stop = textWidth*-1,
                dfd = $.Deferred();

            function go() {
                if(!that.length) return dfd.reject();
                if(width == stop) {
                    i++;
                    if(i == args.count) {
                        that.css(css);
                        return dfd.resolve();
                    }
                    if(args.leftToRight) {
                        width = textWidth*-1;
                    } else {
                        width = offset;
                    }
                }
                that.css('text-indent', width + 'px');
                if(args.leftToRight) {
                    width++;
                } else {
                    width--;
                }
                setTimeout(go, args.speed);
            };
            if(args.leftToRight) {
                width = textWidth*-1;
                width++;
                stop = offset;
            } else {
                width--;            
            }
            that.css(marqueeCss);
            go();
            return dfd.promise();
        };
})(jQuery);

		$(".scroll_content").mouseover(function () {     
			$(this).removeAttr("style");
		}).mouseout(function () {
		$(this).marquee();
	});
	*/
	
function browser_detection() { // Provides alerting functions for antique browsers and mobile devices that may be incompatible
	// From https://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browser
	// Internet Explorer 6-11
	var isIE = ((navigator.userAgent.indexOf("MSIE") != -1 ) || (!!document.documentMode == true ));
	// From https://stackoverflow.com/questions/11381673/detecting-a-mobile-browser
	var isMobile = /iPhone|iPad|iPod|Android/i.test(navigator.userAgent);
	var alertString = new Array();
	if(isIE) {
		alertString.push("Your browser may be incompatible with some of the features of this site. Please consider upgrading to a modern browser.");
	}
	if(isMobile) {
		alertString.push("This site was not designed to work with mobile devices. Please consider accessing this site from a computer or tablet.");
	}
	if(alertString.length > 0) {
		alert(alertString.join("\n"));
	}
}

function loadProc(afld) { // Calls FAA data class, retrieves JSON, and serves it to caller as a dialog menu
	if(!!!document.getElementById("RDY_" + afld)) { // Prevents the data from loading twice in the same session
		// Since we reuse this modal, return it to a blank slate before loading
		document.getElementById("PROC_afldId").innerHTML = afld;
		document.getElementById("PROC_iap").innerHTML = "";
		document.getElementById("PROC_dp").innerHTML = "";
		document.getElementById("PROC_star").innerHTML = "";
		document.getElementById("PROC_misc").innerHTML = "";
		document.getElementById("PROC_load").innerHTML = "Please wait... loading";
		
		//document.getElementById("PROC_" + afld).innerHTML = "<li class=\"dropdown-header\">" + afld + " Procedures</li><li class=\"divider\"></li><li class=\"disabled\"><a>Please wait...</a></li>";
		var xhttp;
		xhttp = new XMLHttpRequest();
		xhttp.onreadystatechange = function() {
			if (this.readyState == 4 && this.status == 200) {
				var procedures = formatProcList(xhttp.responseText); // Send this JSON to another function for parse and display
				//document.getElementById("PROC_" + afld).innerHTML = "<li id=\"RDY_" + afld + "\" class=\"dropdown-header\">" + afld + " Procedures</li><li class=\"divider\"></li>" + procedures;
				document.getElementById("PROC_iap").innerHTML = procedures.iap;
				document.getElementById("PROC_dp").innerHTML = procedures.dp;
				document.getElementById("PROC_star").innerHTML = procedures.star;
				document.getElementById("PROC_misc").innerHTML = procedures.misc;
				document.getElementById("PROC_load").innerHTML = "<span id=\"RDY_" + afld + "\"></span>";				
			}
		};
		xhttp.open("GET", "faa_data.php?afld_id=" + afld, true); 
		xhttp.send();
	} 	
}

function formatProcList(json) { // Formats procedure data into a UL
	//var starter1 = "<li class=\"dropdown-submenu\"><a href=\"#\">";
	//var starter2 = " <i class=\"fas fa-caret-right\"></i></a><ul class=\"dropdown-menu\">";
	//var apd = "<li>None available</li>";
	//var iap = starter1 + "Approaches" + starter2;
	//var star = starter1 + "Arrivals" + starter2;
	//var dp = starter1 + "Departures" + starter2;
	//var misc = starter1 + "Misc" + starter2;
	var def = "<li>None available</li>";
	var iap = star = dp = misc = def;
	json = JSON.parse(json);
	for(var x=0; x<json.length; x++) {
		var proc = json[x];
		var item = "<li><a href=\"" + proc.link + "\" target=\"_blank\">" + proc.name + "</li>";
		if(proc.type == "IAP") {
			if(iap == def) { iap = ""; }
			iap += item;
		}
		else if(proc.type == "STAR") {
			if(star == def) { star = ""; }
			star += item;
		}
		else if(proc.type == "DP") {
			if(dp == def) { dp = ""; }
			dp += item;
		}
		//else if(proc.type == "APD") {
		//	apd += item;
		//}
		else {
			if(misc == def) { misc = ""; }
			misc += item;
		}
	}
	// Build reply
	//var finisher = "</ul></li>";
	//iap += finisher;
	//star += finisher;
	//dp += finisher;
	//misc += finisher;
	//var reply = apd + iap + star + dp + misc;
	const reply = {iap:iap,star:star,dp:dp,misc:misc};
	return reply;
}
/*
$(document).ready(function(){
  $('.dropdown-submenu a.test').on('click', function(e){
    $(this).next('ul').toggle();
    e.stopPropagation();
    e.preventDefault();
  });
});
*/
/*
function airfieldMenu(afld) { // Someone clicked on an airfield... load the context menu
	$('#airfield_menu .dropdown-header').text(afld);
	$('#airfield_menu .afld_config').html("<a href=\"#\" onclick=\"airfieldConfig(\"KPDK\");\">Airfield Config</a>");
	$('#airfield_menu .afld_procedure').html("<a href=\"#PROC\" onclick=\"loadProc(\"" + afld + "\");\" data-toggle=\"modal\">Instrument Procedures</li>");
	$('#airfield_menu').dropdown('toggle');
}
*/

function saveControllerEdit() {
	var editFields = document.getElementsByClassName("controllerEdit");
	var dispFields = document.getElementsByClassName("controllerDisplay");
	if (document.getElementById("controller_edit_active").checked) { // Enter controller edit mode
		for(var x=0;x<editFields.length;x++) {
			editFields[x].classList.add('showControl');
			editFields[x].classList.remove('hideControl');
			dispFields[x].classList.add('hideControl');
			dispFields[x].classList.remove('showControl');

		}
	}
	else { // Enter controller display mode
		for(var x=0;x<editFields.length;x++) {
			editFields[x].classList.add('hideControl');
			editFields[x].classList.remove('showControl');
			dispFields[x].classList.add('showControl');
			dispFields[x].classList.remove('hideControl');

		}
	}
	$('#ControllerEdit').modal('toggle');
}

function removeTemplate(fn=false) { // Remove a multi-IDS template
	if(!document.getElementById("templateDeleteMenu").classList.contains('disabled')) {
	var sel = document.getElementById('pickMulti');
	//alert(sel.selectedIndex);
	document.getElementById('remTemplate').innerHTML = sel.options[sel.selectedIndex].text;
	if(fn) {
		// Delete the template file
		var xhttp;
		xhttp = new XMLHttpRequest();
		xhttp.onreadystatechange = function() {
			if (this.readyState == 4 && this.status == 200) {
				// Template deleted, remove from select list
				//alert('Removing index: ' + sel.selectedIndex);
				sel.remove(sel.selectedIndex);
				returnToLanding('multi_ids');
			}
			else {
			}
		};
		//alert(sel.value);
		xhttp.open("GET", "ajax_handler.php?delete=" + sel.value + "&cid=" + document.getElementById('cid').value, true); 
		xhttp.send();
	}
		$('#TemplateDelete').modal('toggle');
	}
}

function setDynamicMargin() {
	var buttonHeight = $("#buttons").height();     
     $(".dynMargin").css('margin-bottom',buttonHeight); 
}

function modAccessList(list,fn) {
	var reply = '';
	var xhttp;
	xhttp = new XMLHttpRequest();
	xhttp.onreadystatechange = function() {
		if (this.readyState == 4 && this.status == 200) {
			reply = xhttp.responseText;
			//alert('function: ' + fn + ' status: ' + reply);
			if((fn == 'add')&&(reply == 'success')) { // Add CID to select list
				var opt = document.createElement('option');
				opt.text = document.getElementById(list + 'listCID').value;
				opt.value = document.getElementById(list + 'listCID').value;
				document.getElementById(list + 'list_select').add(opt);
				clearCIDfield();
			}
			if((fn == 'remove')&&(reply == 'success')) { // Remove CID from select list
				var x = document.getElementById(list + 'list_select');
				//alert('removing item');
				for(y=0;y<x.length;y++) {
					if(x.options[y].value == document.getElementById(list + 'listCID').value + '\n') {
						//alert('found');
						x.remove(y);
					}
				}
				clearCIDfield();
			}
			if(fn == 'lookup') { // Dump user data in fields
				reply = JSON.parse(xhttp.responseText);
				document.getElementById(list + 'list_name').value = reply['data']['fname'] + ' ' + reply['data']['lname'];
				document.getElementById(list + 'list_rating').value = reply['data']['rating_short'];
				document.getElementById(list + 'list_facility').value = reply['data']['facility'];
			}
			if(fn == 'fetch') { // Refresh blacklist select list
				document.getElementById(list + 'list_select').innerHTML = "";
				reply = JSON.parse(xhttp.responseText);
				for(y=0;y<reply.length;y++) {
					var opt = document.createElement('option');
					opt.text = reply[y];
					opt.value = reply[y];
					document.getElementById(list + 'list_select').add(opt);					
				}				
			}
		}
		else {
		}
	};
	var valid = true;
	var errorMsg = '';
	var validate = document.getElementById(list + 'listCID').value;
	if((fn == 'add')&&(isNaN(validate)||isNaN(parseInt(validate))||(parseInt(validate)< 100000)||parseInt(validate)>9999999)) {
		valid = false;
		errorMsg += "CID must consist of 6-7 digits\n";
	}
	if(((fn == 'remove')||(fn == 'lookup'))&&(document.getElementById(list + 'listCID').value == "")) {
		valid = false;
		errorMsg += "Please select a CID\n";		
	}
	if(valid) {
		xhttp.open("GET", "ajax_administration.php?list=" + list + "&function=accesslist_" + fn + "&cid=" + document.getElementById(list + 'listCID').value, true); 
		xhttp.send();
	}
	else {
		alert(errorMsg);
	}
}

function clearCIDfield() {
	document.getElementById('blacklistCID').value = "";
	document.getElementById('whitelistCID').value = "";
}

function displayLogs() { // Pull logfiles via AJAX and dump into textarea for display
	var logs = new Array('access','system');
	for(const log of logs) {
		logAJAX(log);
	}	
}

function startLiveLogging() { // Process to start/stop live logging with a auto-refresh interval
	displayLogs();
	var logUpdate = window.setInterval(function(){
		if (!$('#ADMIN').hasClass('in')) { // Stops logging when modal is closed
			clearInterval(logUpdate);
		}
		else {
			displayLogs();
		}
	}, 5000);
}

function logAJAX(log) {
	var xhttp;
	xhttp = new XMLHttpRequest();
	xhttp.onreadystatechange = function() {
		if (this.readyState == 4 && this.status == 200) {
			document.getElementById(log + '_log').value = xhttp.responseText;
		}
	};
	xhttp.open("GET", "ajax_administration.php?function=log_fetch&log_type=" + log, true); 
	xhttp.send();
}

function stopVideo(id) {
	video = document.getElementById(id);
	video.pause();
	video.currentTime = 0;
}

function linkify(str) { // Not being used, but can turn links in text into a clickable link
	var exp = /(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig;
	str = str.replace(exp,"<a href=\"$1\" target=\"_blank\">$1</a>"); 
	return str;
}

function unlinkify(str) {
	//return $('#' + id + ' a').contents().unwrap();
	let tmp = document.createElement("DIV");
	tmp.innerHTML = str;
	return tmp.textContent || tmp.innerText || "";
}

function checkDST() {
Date.prototype.stdTimezoneOffset = function () {
    var jan = new Date(this.getFullYear(), 0, 1);
    var jul = new Date(this.getFullYear(), 6, 1);
    return Math.max(jan.getTimezoneOffset(), jul.getTimezoneOffset());
}

Date.prototype.isDstObserved = function () {
    return this.getTimezoneOffset() < this.stdTimezoneOffset();
}

var today = new Date();
if (today.isDstObserved()) { 
    return true;
}
else return false;	
}

// Drag events handle drag & drop of IDS airfield content boxes - source from syntaxxx.com (https://syntaxxx.com/rearranging-web-page-items-with-html5-drag-and-drop/)
function dragStarted(evt) {
	//Start drag
	source = evt.target;
	//Set data
	evt.dataTransfer.setData("text/plain", evt.target.innerHTML);
	//Specify allowed transfer
	evt.dataTransfer.effectAllowed = "move";
}

function draggingOver(evt) {
	//Drag over
	evt.preventDefault();
	//Specify operation
	evt.dataTransfer.dropEffect = "move";
}

function dropped(evt) {
	//Drop
	evt.preventDefault();
	evt.stopPropagation();
	//alert(evt.target.closest("div.moveable").tagName + ' ' + evt.target.closest("div.moveable").classList + ' dump: ' + evt.dataTransfer.getData("text/plain"));
	//alert(source.closest("div.moveable").tagName + ' ' + source.closest("div.moveable").classList + ' dump: ' + evt.target.closest("div.moveable").innerHTML);

	//Update text in dragged item
	//source.innerHTML = evt.target.innerHTML;
	source.closest("div.moveable").innerHTML = evt.target.closest("div.moveable").innerHTML;
	//Update text in drop target
	//evt.target.innerHTML = evt.dataTransfer.getData("text/plain");
	evt.target.closest("div.moveable").innerHTML = evt.dataTransfer.getData("text/plain")
}