var login_location_href="/member/login.aspx";
var login_function;
function checkform(uid,upw)
{
	if(document.all(uid).value=="")
	{
		alert("用户名不能为空!");
		document.all(uid).focus();
		return false;
	}
	if(document.all(upw).value=="")
	{
		alert("密码不能为空!");
		document.all(upw).focus();
		return false;
	}
	user_login(document.all(uid).value,document.all(upw).value);
}
function checkformlogin(uid,upw,udiv)
{

	if(document.all(uid).value=="")
	{
		alert("用户名不能为空!");
		document.all(uid).focus();
		return false;
	}
	if(document.all(upw).value=="")
	{
		alert("密码不能为空!");
		document.all(upw).focus();
		return false;
	}
	document.getElementById(udiv).style.display="none";
	user_login(document.all(uid).value,document.all(upw).value);
}

function user_login(uname,upass)
{
　　oHttpReqnum=false;
　　oHttpReqnum = new ActiveXObject("MSXML2.XMLHTTP"); 
　　oHttpReqnum.onreadystatechange=ajaxlogin; //设置获得响应后将触发的函数名
　　oHttpReqnum.open ("POST", "/member/user_login.aspx?user_name="+escape(uname)+"&user_pass="+escape(upass), true); 
　　oHttpReqnum.send (""); 
}
function ajaxlogin()
{
	var oDoc = new ActiveXObject("MSXML2.DOMDocument");
　　if (oHttpReqnum.readystate==4)
	{
		if (oHttpReqnum.status==200)
		{
			var str;
			str=oHttpReqnum.responseText;
			oDoc.loadXML(str);
			var info=oDoc.documentElement.childNodes[0].childNodes[0].text;  
			if(info=="")
			{
				alert("登录失败!");
			}
			else if(info.indexOf("false")==0)
			{
				alert(info.substring(info.indexOf(":")+1));
			}
			else if(info.indexOf("true")==0)
			{
				if(login_function!=null)
				{
					login_function();
				}
				else if(login_location_href!="")
				{
					window.location.href=login_location_href;
				}
			}
		}
		else
		{
			alert('登录过程中发生错误!');
		}
	}
}