var worldmap={
	id:"WorldMap",imgID:"WorldMap_base",IMGPATH:"../common/image/webpage_images/",overs:{},
	mover:function(e){
		var targ=Event.element(e);
		if(targ.nodeName!="AREA" || (!targ.id)) return false;
		if(this.overs[targ.id]) $(this.imgID).src=this.overs[targ.id];
	},
	moff:function(e){
		var targ=Event.element(e);
		if(targ.nodeName!="AREA" || (!targ.id)) return false;
		if(this.overs[targ.id]) $(this.imgID).src=this.origsrc;
	},
	initialize:function(){
		if(!$(this.id) || !$(this.imgID)) return false;
		var targ=$(this.id);
		this.origsrc = $(this.imgID).src;
		var areas=targ.getElementsByTagName("area");
		for(var key in areas){
			var area=areas[key];
			if(area.id){
				Event.observe(area,"mouseover",this.mover.bind(this),false);
				Event.observe(area,"mouseout",this.moff.bind(this),false);			
				var img=new Image();
				this.overs[area.id]=img.src=this.IMGPATH+area.id+".gif";
			}
		}
	}
}
Event.observe(window,"load",worldmap.initialize.bind(worldmap),false);