function GetCookie (name) {
 var arg = name + "=";
 var alen = arg.length;
 var clen = document.cookie.length;
 var i = 0;
 while (i < clen) {
     var j = i + alen;
     if (document.cookie.substring(i, j) == arg)
     return getCookieVal (j);
     i = document.cookie.indexOf(" ", i) + 1;
     if (i == 0) break;
 }
 return null;
}


function SetCookie (name, value) {
 var argv = SetCookie.arguments;
 var argc = SetCookie.arguments.length;
 var expires = (argc > 2) ? argv[2] : null;
 var path = (argc > 3) ? argv[3] : null;
 var domain = (argc > 4) ? argv[4] : null;
 var secure = (argc > 5) ? argv[5] : false;
 document.cookie = name + "=" + escape (value) +
 ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
 ((path == null) ? "" : ("; path=" + path)) +
 ((domain == null) ? "" : ("; domain=" + domain)) +
 ((secure == true) ? "; secure" : "");
}




function getCookieVal(offset) {
   var endstr = document.cookie.indexOf (";", offset);
   if (endstr == -1)
   endstr = document.cookie.length;
   return unescape(document.cookie.substring(offset, endstr));
}


function showad(timeout) {
        window.setTimeout("showad2()",3000);
}

function showad2() {
        document.getElementById('myad').style.visibility = "visible"
}