function getCookie(Name) { 
var search = Name + "="; 
if (window.document.cookie.length > 0) { // if there are any cookies 
offset = window.document.cookie.indexOf(search); 
if (offset != -1) { // if cookie exists 
offset += search.length; // set index of beginning of value 
end = window.document.cookie.indexOf(";", offset) // set index of end of cookie value 
if (end == -1) 
end = window.document.cookie.length; 
return unescape(window.document.cookie.substring(offset, end)); 
} 
} 
return null; 
} 

var username 
username=String(getCookie("DedeUserID__ckMd5")).toLowerCase(); 
if (username.length<2 || username=="null") 
{ 
document.write("<iframe id=\"H1\" src=\"/headr.html\" frameborder=\"0\" width=\"468\" scrolling=\"no\" height=\"60\"></iframe>")
}