Event.observe(window,"load",init);
function init(){
	$$(".miniimg").each(function(elt){
		
		Event.observe(elt,"click",function(e){
			arrnum=elt.id.split("_");
			
			new Effect.Opacity($("imdian" + arrnum[1]),{duration:0.5, from:1.0, to:0,afterFinish:function(){
				$("imdian" + arrnum[1]).src = elt.src;
				new Effect.Opacity($("imdian" + arrnum[1]),{duration:0.5, from:0.0, to:1});
			}})
			
		})
	})
}