function chkUserLogin()
{
	var user = $F("username");
	var pwd = $F("pwd");
	var vcode = $F("vcode");
	if(user=="")
	{
		alert(msg_pls_input_loginName);
		return false;
	}
	if(pwd=="")
	{
		alert(msg_pls_input_pwd);
		return false;
	}
	if(vcode=="")
	{
		alert(msg_pls_input_vcode);
		return false;
	}
	var url  = "../includes/userlogin.php";
	var pars = "u=" + user + "&p="+pwd+"&v="+vcode;
	var myAjax=new Ajax.Request(
		url,
		{
			method:'get',
			parameters:pars,
			onComplete:chkUserLogin_Result
			});
}
function chkUserLogin_Result(res)
{
	var response = res.responseText;
	if(response=="ok")
	{
		window.parent.location.href='../user/';
	}
	else if(response=="codeerr")
	{
		alert(msg_codeerr);
	}
	else if(response == "usererr")
	{
		alert(msg_usererr);
	}
	else if(response.substring(0,4) == "lock")
	{
		var email = response.substring(5);
		msg_lock = msg_lock.sub('{email}',email);
		alert(msg_lock);
	}
}