jquery.mousewheel.js

(function(c){function g(a){var b=a||window.event,i=[].slice.call(arguments,1),e=0,h=0,f=0;a=c.event.fix(b);a.type="mousewheel";if(b.wheelDelta)e=b.wheelDelta/120;if(b.detail)e=-b.detail/3;f=e;if(b.axis!==undefined&&b.axis===b.HORIZONTAL_AXIS){f=0;h=-1*e}if(b.wheelDeltaY!==undefined)f=b.wheelDeltaY/120;if(b.wheelDeltaX!==undefined)h=-1*b.wheelDeltaX/120;i.unshift(a,e,h,f);return(c.event.dispatch||c.event.handle).apply(this,i)}var d=["DOMMouseScroll","mousewheel"];if(c.event.fixHooks)for(var j=d.length;j;)c.event.fixHooks[d[--j]]=
c.event.mouseHooks;c.event.special.mousewheel={setup:function(){if(this.addEventListener)for(var a=d.length;a;)this.addEventListener(d[--a],g,false);else this.onmousewheel=g},teardown:function(){if(this.removeEventListener)for(var a=d.length;a;)this.removeEventListener(d[--a],g,false);else this.onmousewheel=null}};c.fn.extend({mousewheel:function(a){return a?this.bind("mousewheel",a):this.trigger("mousewheel")},unmousewheel:function(a){return this.unbind("mousewheel",a)}})})(jQuery);