function pics_show(emId,delay){
	var obj=$("#"+emId), con=obj.find("div.image"), len=con.length-1, lis=obj.find("div.change>i"), curr=0, old=-1, timer=null;
	var begin = false;
	function roll(pCur){
		if(pCur==old) return;
		begin=true; curr=pCur;
		lis.removeClass("cur");
		$(lis[curr]).addClass("cur");
		if(old>-1){
			$(con[old]).css("z-index","0").find(">em").css("display","none");
		}
		$(con[pCur]).find(">em").css("display","block");
		$(con[pCur]).css({"display":"block","z-index":"9999"}).find("img").fadeIn(600,function(){
			if(old>-1){
				$(con[old]).find("img").fadeOut("fast");
				$(con[old]).css("display","none");
			}
			old=curr;
			begin=false;
		});
	}
	function fnNext(pCur){
		var index=pCur;
		index+=1;
		if(index>len) index=0;
		return index;
	}
	function fnGo(){
		roll(fnNext(curr));
	}
	function fnPlay(){
		timer=setInterval(fnGo,delay);
	}
	function fnPause(){
		clearInterval(timer);
	}
	roll(curr);
	fnPlay();
	lis.each(function(i,li){
		$(li).click(function(){
			if(begin){return;}
			fnPause();
			curr=i;
			roll(curr);
			fnPlay();
		})
	});
}