function mag_send(){
	new Ajax.Request("/feedback/feedback_add.jsp",{method:"post",
	parameters:$("fb").serialize(),
	onComplete:function(transport3){
			var msg;
			var ok=false;
			if(transport3.status==200){
				switch(transport3.responseText)
				{
					case "0":
						$("boxx").innerHTML="<div class=\"align2 color_red\">您的留言已被保存。感谢您的大力支持！</div>";
						ok=true;
						break;
					case "1":
						msg="验证码错误";
						break;
					case "2":
						msg="服务器繁忙";
						break;
					case "3":
						msg="请先填写留言内容";
						break;
					}
				if(!ok)alert(msg);
				//var di=transport3.responseText.avalJSON();
				//alert(di);
			}else{alert("error");}
		}//end function
	});
	}