(function($){$.fn.extend({mousewheel:function(f){if(!f.guid){f.guid=$.event.guid++;}if(!$.event._mwCache){$.event._mwCache=[];}return this.each(function(){if(this._mwHandlers){return this._mwHandlers.push(f);}else{this._mwHandlers=[];}this._mwHandlers.push(f);var s=this;this._mwHandler=function(e){e=$.event.fix(e||window.event);$.extend(e,this._mwCursorPos||{});var delta=0,returnValue=true;if(e.wheelDelta){delta=e.wheelDelta/120;}if(e.detail){delta=-e.detail/3;}if(window.opera){delta=-e.wheelDelta;}for(var i=0;i<s._mwHandlers.length;i++){if(s._mwHandlers[i]){if(s._mwHandlers[i].call(s,e,delta)===false){returnValue=false;e.preventDefault();e.stopPropagation();}}}return returnValue;};if($.browser.mozilla&&!this._mwFixCursorPos){this._mwFixCursorPos=function(e){this._mwCursorPos={pageX:e.pageX,pageY:e.pageY,clientX:e.clientX,clientY:e.clientY};};$(this).bind("mousemove",this._mwFixCursorPos);}if(this.addEventListener){if($.browser.mozilla){this.addEventListener("DOMMouseScroll",this._mwHandler,false);}else{this.addEventListener("mousewheel",this._mwHandler,false);}}else{this.onmousewheel=this._mwHandler;}$.event._mwCache.push($(this));});},unmousewheel:function(f){return this.each(function(){if(f&&this._mwHandlers){for(var i=0;i<this._mwHandlers.length;i++){if(this._mwHandlers[i]&&this._mwHandlers[i].guid==f.guid){delete this._mwHandlers[i];}}}else{if($.browser.mozilla&&!this._mwFixCursorPos){$(this).unbind("mousemove",this._mwFixCursorPos);}if(this.addEventListener){if($.browser.mozilla){this.removeEventListener("DOMMouseScroll",this._mwHandler,false);}else{this.removeEventListener("mousewheel",this._mwHandler,false);}}else{this.onmousewheel=null;}this._mwHandlers=this._mwHandler=this._mwFixCursorPos=this._mwCursorPos=null;}});}});$(window).one("unload",function(){var els=$.event._mwCache||[];for(var i=0;i<els.length;i++){els[i].unmousewheel();}});})(jQuery);