var options=Object.extend({startcolor:'#ffff99'},arguments[1]||{});
this.start(options);
},
setup:function(){
if(this.element.getStyle('display')=='none'){this.cancel();return;}
this.oldStyle={};
if(!this.options.keepBackgroundImage){
this.oldStyle.backgroundImage=this.element.getStyle('background-image');
this.element.setStyle({backgroundImage:'none'});
}
if(!this.options.endcolor)
this.options.endcolor=this.element.getStyle('background-color').parseColor('#ffffff');