Помош в коде click-under

$js_popunderGlobalClick=0;
document.onmouseup=jspopunder;

function jspopunder() {

$js_popunderGlobalClick=$js_popunderGlobalClick+1;
if($js_popunderGlobalClick==1) {

//ssilka dlia redirekta
$js_popunder_URL="http://сайт/";

$CookieTest=navigator.cookieEnabled;
if($CookieTest) {

$ISawAdvert=js_popundergetCookie("advmaker_pop");

if(!$ISawAdvert) {

$js_pupunder_newwindow=window.open($js_popunder_URL,"_blank","toolbar=yes, location=yes, directories=yes, status=yes, menubar=yes, scrollbars=yes, resizable=yes, copyhistory=yes");

if($js_pupunder_newwindow) {
js_popundersetCookie("advmaker_pop",2,12);
$js_pupunder_newwindow.blur();
}
}
}
}
}

function js_popundersetCookie($Name,$Value,$EndH){

var exdate=new Date();
$EndH=exdate.getHours()+$EndH;
exdate.setHours($EndH);
document.cookie=$Name+ "=" +escape($Value)+(($EndH==null) ? "" : ";expires="+exdate.toGMTString()+"; path=/;");
}

function js_popundergetCookie($Name){

if (document.cookie.length>0) {
$Start=document.cookie.indexOf($Name + "=");
if ($Start!=-1) { $Start=$Start + $Name.length+1; $End=document.cookie.indexOf(";",$Start);
if ($End==-1) $End=document.cookie.length; return unescape(document.cookie.substring($Start,$End));
}
}

return "";
}