function blender(){this.timer=false;this.speed=10;}
blender.prototype.blend=function(idFrom,idTo,speed){if(speed>0){this.speed=speed;}
var self=this;this.idFrom=idFrom;this.idTo=idTo;this.increment=Math.round(100/this.speed);this.setOpacity(idFrom,100);this.setOpacity(idTo,0);document.getElementById(idFrom).style.zIndex=5;document.getElementById(idTo).style.zIndex=10;document.getElementById(idFrom).style.display='block';document.getElementById(idTo).style.display='block';this.startTimer();}
blender.prototype.updateBlend=function(){if(element=document.getElementById(this.idTo)){this.setOpacity(this.idTo,((element.style.opacity*100)+this.increment));this.setOpacity(this.idFrom,((document.getElementById(this.idFrom).style.opacity*100)-this.increment));if(element.style.opacity<1){this.startTimer();}
else{document.getElementById(this.idFrom).style.display='none';this.stopTimer();}}}
blender.prototype.setOpacity=function(idName,opacity){if(object=document.getElementById(idName).style){object.opacity=(opacity/100);object.filter=opacity==100?"":"alpha(opacity="+opacity+")";}}
blender.prototype.startTimer=function(){var _self=this;this.stopTimer();this.timer=setTimeout(function(){_self.updateBlend();},1);}
blender.prototype.stopTimer=function(){if(this.timer!=false){clearTimeout(this.timer);this.timer=false;}}