rolloversC=function(){
	  this.ov={};
	  this.reset={};
	  this.add=function(src,id){
		    this.ov[id]=new Image();
		    this.ov[id].src=src;
		    }
	    this.swap=function(id){//alert(id)
		      var ref=document.getElementById(id);
		      //First once - add to collection used in restore
		      //alert(typeof(this.reset[id]))
		      if(typeof(this.reset[id])=='undefined')
			      this.reset[id]=ref.src;
		      ref.src=this.ov[id].src;
		      }
	      this.restore=function(id){
		        document.getElementById(id).src=this.reset[id];
		        }
	        };
ROV=new rolloversC();