var Loop=new Class({loopCount:0,isStopped:true,isLooping:false,loopMethod:$empty,setLoop:function(fn,delay){if(this.isLooping){this.stopLoop();var wasLooping=true}else var wasLooping=false;this.loopMethod=fn;this.loopDelay=delay||3e3;wasLooping&&this.startLoop();return this},stopLoop:function(){this.isStopped=true;this.isLooping=false;$clear(this.periodical);return this},startLoop:function(delay){if(this.isStopped){var delay=delay?delay:this.loopDelay;this.isStopped=false;this.isLooping=true;this.periodical=this.looper.periodical(delay,this)}return this},resetLoop:function(){this.loopCount=0;return this},looper:function(){this.loopCount++;this.loopMethod(this.loopCount);return this}})