diff --git a/demo.php b/demo.php
new file mode 100644
index 0000000..5c66263
--- /dev/null
+++ b/demo.php
@@ -0,0 +1,42 @@
+<?php
+
+$raw_files = glob('*.*');
+$files = array();
+
+foreach( $raw_files as $r ){
+  if( preg_match( '/\.(?:png|jpg|jpeg)$/' , $r ) )
+    $files[] = $r;
+}
+
+?><!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<title>Subtle Pattern Demo</title>
+<style>
+body , html { padding:0;margin:0;height:100%; }
+body { background:#ccc none repeat 0 0; }
+form { padding:10px;text-align:center;background:#FFF;border-bottom:1px solid #000; }
+</style>
+</head>
+<body>
+<form>
+<select id="image">
+  <option><?php echo implode( "</option>\n  <option>" , $files ); ?></option>
+</select>
+</form>
+
+<script src="http://code.jquery.com/jquery.min.js"></script>
+<script>
+$(document).ready(function(){
+
+  $('#image')
+    .bind('keyup change unfocus blur',function(){
+      $('body').css( 'background-image' , 'url('+$(this).val()+')' );
+    })
+    .blur();
+
+});
+</script>
+</body>
+</html>
\ No newline at end of file
