var req;
function members(){
　	var url = "/judge?key="+Math.random(); 
     　　if (window.XMLHttpRequest) { 
             　　req = new XMLHttpRequest(); 
     　　}else if (window.ActiveXObject) { 
             　　req = new ActiveXObject("Microsoft.XMLHTTP"); 
     　　} 
     　　if(req){ 
             　　req.open("GET",url, true); 
             　　	req.onreadystatechange = complete; 
             　　 req.send(null); 
     　　} 
 
}

function complete(){
     　　if (req.readyState == 4) { 
             　　if (req.status == 200) { 
                     　　var as = req.responseText;
                     　 if(as=="0"){
                   		  document.getElementById("logindiv").innerHTML="<a href=/login.jsp>登录</a> <a href=/reg.jsp>注册</a>";
                     }else{
                      document.getElementById("logindiv").innerHTML="欢迎你 <a href=/member/index.jsp>"+as+"</a>";
                     }
             　　}
     　　}
 }