(function(n){function i(t){var i=t||window.event,e=[].slice.call(arguments,1),r=0,f=0,u=0;return t=n.event.fix(i),t.type="mousewheel",t.wheelDelta&&(r=t.wheelDelta/120),t.detail&&(r=-t.detail/3),u=r,i.axis!==undefined&&i.axis===i.HORIZONTAL_AXIS&&(u=0,f=-1*r),i.wheelDeltaY!==undefined&&(u=i.wheelDeltaY/120),i.wheelDeltaX!==undefined&&(f=i.wheelDeltaX/-120),e.unshift(t,r,f,u),n.event.handle.apply(this,e)}var t=["DOMMouseScroll","mousewheel"];n.event.special.mousewheel={setup:function(){if(this.addEventListener)for(var n=t.length;n;)this.addEventListener(t[--n],i,!1);else this.onmousewheel=i},teardown:function(){if(this.removeEventListener)for(var n=t.length;n;)this.removeEventListener(t[--n],i,!1);else this.onmousewheel=null}};n.fn.extend({mousewheel:function(n){return n?this.bind("mousewheel",n):this.trigger("mousewheel")},unmousewheel:function(n){return this.unbind("mousewheel",n)}})})($J)