var Roll=Class.create({initialize:function(b){this.img=b.getElementsByTagName("img")[0];this.locked=false;this.firstRun=true;Event.observe(this.img,"mouseover",this.change.bindAsEventListener(this));Event.observe(this.img,"mouseout",this.change.bindAsEventListener(this))},change:function(a){if(a&&this.firstRun){this.firstRun=false}if(!this.locked){this.behavior=(!Number(this.img.src.charAt(this.img.src.length-5))&&!this.firstRun)?1:0;this.img.src=this.img.src.substring(0,this.img.src.length-5)+this.behavior+"."+this.img.src.substring(this.img.src.length-3,this.img.src.length)}},manual:function(a){this.img.src=this.img.src.substring(0,this.img.src.length-5)+a+"."+this.img.src.substring(this.img.src.length-3,this.img.src.length)},changeTypeNavOn:function(){this.firstRun=false;this.change();this.lock()},lock:function(){this.locked=true},unlock:function(){this.locked=false}});