function chkdiv(divid){
	var chkid=document.getElementById(divid);
	if(chkid != null){return true; }
	else {return false; }	
}
if (chkdiv('support'))
 {document.getElementById('support').innerHTML='<div class="tp"><div class="tp_d"><span onclick=javascript:uservote(1)><em>资料很好 (<font id="show_1">0</font>)</em></span><div class="jdt"><div class="jl" style="width:0%;"></div><div class="jr" style="width:100%;"></div></div></div><div class="tp_c"><span onclick=javascript:uservote(0)><em>资料很差 (<font id="show_0">0</font>)</em></span><div class="jdt"><div class="jl" style="width:0%;"></div><div class="jr" style="width:100%;"></div></div></div><div class="tp_bc"><span><em><a href="/Complain/complain.asp?ID=2912555">资料有错</a></em></span></div></div>';}

function uservote(str) {
	//创建XMLHttpRequest对象
	var xmlhttp;
	try{
		xmlhttp=new XMLHttpRequest();
	}catch(e){
		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	}
	//创建请求结果处理程序
	xmlhttp.onreadystatechange=function(){
		if (4==xmlhttp.readyState){
			if (200==xmlhttp.status){
				var content=xmlhttp.responseText;
				//alert('投票成功！感谢您的支持！');
				switch(content){
						case "0":
							alert("您没有登陆，请先登陆");
							break;
						case "1":
							alert("请先下载该资源在投票");
							break;
						case "2":
							alert("投票成功！感谢您的支持！");	
							var support = document.getElementById('show_1').innerHTML;
							support++ ;
							document.getElementById('show_1').innerHTML=support;
							break;
						case "3":
							alert("投票成功！感谢您的支持！");	
							var support = document.getElementById('show_0').innerHTML;
							support++ ;
							document.getElementById('show_0').innerHTML=support;
							break;
						case "4":
							alert("已经参与过了");
							break;	
						case "5":
							alert("网络故障，请稍后重试1。");
							break;	
				}
				//document.getElementById('show_'+str).innerHTML=content;
			}else{
				alert('网络故障，请稍后重试。');
			}
		}
	}
	//打开连接，true表示异步提交
	xmlhttp.open("post", "/Down/include/UserVote.asp", true);
	//当方法为post时需要如下设置http头
	xmlhttp.setRequestHeader('Content-type','application/x-www-form-urlencoded');
	//发送数据
	xmlhttp.send("ID="+escape(2912555)+"&action="+escape(str));
}