var Chain=new Class({chain:function(){this.$chain=(this.$chain||[]).extend(arguments);return this;},callChain:function(){return(this.$chain&&this.$chain.length)?this.$chain.shift().apply(this,arguments):false;},clearChain:function(){if(this.$chain)this.$chain.empty();return this;}});var Events=new Class({addEvent:function(type,fn,internal){type=Events.removeOn(type);if(fn!=$empty){this.$events=this.$events||{};this.$events[type]=this.$events[type]||[];this.$events[type].include(fn);if(internal)fn.internal=true;}
return this;},addEvents:function(events){for(var type in events)this.addEvent(type,events[type]);return this;},fireEvent:function(type,args,delay){type=Events.removeOn(type);if(!this.$events||!this.$events[type])return this;this.$events[type].each(function(fn){fn.create({'bind':this,'delay':delay,'arguments':args})();},this);return this;},removeEvent:function(type,fn){type=Events.removeOn(type);if(!this.$events||!this.$events[type])return this;if(!fn.internal)this.$events[type].erase(fn);return this;},removeEvents:function(type){for(var e in this.$events){if(type&&type!=e)continue;var fns=this.$events[e];for(var i=fns.length;i--;i)this.removeEvent(e,fns[i]);}
return this;}});Events.removeOn=function(string){return string.replace(/^on([A-Z])/,function(full,first){return first.toLowerCase();});};var Options=new Class({setOptions:function(){this.options=$merge.run([this.options].extend(arguments));if(!this.addEvent)return this;for(var option in this.options){if($type(this.options[option])!='function'||!(/^on[A-Z]/).test(option))continue;this.addEvent(option,this.options[option]);delete this.options[option];}
return this;}});