Element.Properties.events={set:function(events){this.addEvents(events);}};Native.implement([Element,Window,Document],{addEvent:function(type,fn){var events=this.retrieve('events',{});events[type]=events[type]||{'keys':[],'values':[]};if(events[type].keys.contains(fn))return this;events[type].keys.push(fn);var realType=type,custom=Element.Events.get(type),condition=fn,self=this;if(custom){if(custom.onAdd)custom.onAdd.call(this,fn);if(custom.condition){condition=function(event){if(custom.condition.call(this,event))return fn.call(this,event);return false;};}
realType=custom.base||realType;}
var defn=function(){return fn.call(self);};var nativeEvent=Element.NativeEvents[realType]||0;if(nativeEvent){if(nativeEvent==2){defn=function(event){event=new Event(event,self.getWindow());if(condition.call(self,event)===false)event.stop();};}
this.addListener(realType,defn);}
events[type].values.push(defn);return this;},removeEvent:function(type,fn){var events=this.retrieve('events');if(!events||!events[type])return this;var pos=events[type].keys.indexOf(fn);if(pos==-1)return this;var key=events[type].keys.splice(pos,1)[0];var value=events[type].values.splice(pos,1)[0];var custom=Element.Events.get(type);if(custom){if(custom.onRemove)custom.onRemove.call(this,fn);type=custom.base||type;}
return(Element.NativeEvents[type])?this.removeListener(type,value):this;},addEvents:function(events){for(var event in events)this.addEvent(event,events[event]);return this;},removeEvents:function(type){var events=this.retrieve('events');if(!events)return this;if(!type){for(var evType in events)this.removeEvents(evType);events=null;}else if(events[type]){while(events[type].keys[0])this.removeEvent(type,events[type].keys[0]);events[type]=null;}
return this;},fireEvent:function(type,args,delay){var events=this.retrieve('events');if(!events||!events[type])return this;events[type].keys.each(function(fn){fn.create({'bind':this,'delay':delay,'arguments':args})();},this);return this;},cloneEvents:function(from,type){from=$(from);var fevents=from.retrieve('events');if(!fevents)return this;if(!type){for(var evType in fevents)this.cloneEvents(from,evType);}else if(fevents[type]){fevents[type].keys.each(function(fn){this.addEvent(type,fn);},this);}
return this;}});Element.NativeEvents={click:2,dblclick:2,mouseup:2,mousedown:2,contextmenu:2,mousewheel:2,DOMMouseScroll:2,mouseover:2,mouseout:2,mousemove:2,selectstart:2,selectend:2,keydown:2,keypress:2,keyup:2,focus:2,blur:2,change:2,reset:2,select:2,submit:2,load:1,unload:1,beforeunload:2,resize:1,move:1,DOMContentLoaded:1,readystatechange:1,error:1,abort:1,scroll:1};(function(){var $check=function(event){var related=event.relatedTarget;if(related==undefined)return true;if(related===false)return false;return($type(this)!='document'&&related!=this&&related.prefix!='xul'&&!this.hasChild(related));};Element.Events=new Hash({mouseenter:{base:'mouseover',condition:$check},mouseleave:{base:'mouseout',condition:$check},mousewheel:{base:(Browser.Engine.gecko)?'DOMMouseScroll':'mousewheel'}});})();