帝国cms评论时自动判断会员是否登陆的方法

<?php
require("../class/connect.php");
if(!defined('InEmpireCMS'))
{
exit();
}
$myuserid=(int)getcvar('mluserid');
$myusername=getcvar('mlusername');
if($myuserid)
{
?>
document.writeln("<label>用户名：<a href=\"<?=$public_r[newsurl]?>e/space/?userid=<?=$myuserid?>\"><?=$myusername?></a><\/label>");
<?
}
else
{
?>
document.writeln("<label>用户名：<input size=\"10\" name=\"username\" type=\"text\" \/><\/label><label>密码：<input size=\"10\" type=\"password\" name=\"password\" \/><\/label><label><input type=\"checkbox\" name=\"nomember\" id=\"nomember\" value=\"1\" checked=\"checked\" \/>匿名(无需注册)<\/label><a href=\"<?=$public_r[newsurl]?>e\/member\/register\/\">立即注册<\/a>");
<?
}
?>