function getCookie(Name) {  
    var search = Name + "=";  
    if (window.document.cookie.length > 0) { // 如果存在任何cookies  
        offset = window.document.cookie.indexOf(search);  
        if (offset != -1) { // 如果找到指定的cookie  
            offset += search.length; // 设置值开始的索引  
            end = window.document.cookie.indexOf(";", offset) // 设置cookie值结束的索引  
            if (end == -1)  
                end = window.document.cookie.length;  
            return unescape(window.document.cookie.substring(offset, end));  
        }  
    }  
    return null;  
}  

var username  
username=String(getCookie("DedeUserIDckMd5")).toLowerCase();  
if (username.length<2 || username=="null")  
{  
document.writeln("<a href=\\"http:\\/\\/www.xkzzz.com\\" target=\\"_blank\\">演示：侠客站工站<\\/a>")  
}