function doClick_left(o){
	 o.className="left1-2";
	 var j;
	 var id;
	 var e;
	 for(var i=1;i<=3;i++){
	   id ="left"+i;
	   j = document.getElementById(id);
	   e = document.getElementById("left_con"+i);
	   if(id != o.id){
	   	 j.className="left1-1";
	   	 e.style.display = "none";
	   }else{
		e.style.display = "block";
	   }
	 }
	 }
//酘晚賑雄薯1//