var domain;
function grabDomainAndPopUp(){
   var str1 = "erudite-center.com";
   var str2 = "www.erudite-center.com";
   var str3 = "javaitt.net";
   var str4 = "www.javaitt.net";
   var the_url = location.href;
   var lead_slashes = the_url.indexOf("//");
   var domain_start = lead_slashes + 2;
   var without_resource = 	the_url.substring(domain_start,the_url.length);
   var next_slash = without_resource.indexOf("/");
   domain = without_resource.substring(0, next_slash);
   if ((domain !=str1)&&(domain !=str2)&&(domain !=str3)&&(domain !=str4)){
      var pop = null;
      pop = getCookie('pop');           
      if (((document.layers && navigator.appVersion.charAt(0) >= 2) || (document.all && navigator.appVersion.charAt(0) >= 3)) && pop == null) {	
         popWin = window.open('http://www.javafaq.nu/java/pop_up.htm','','scrollbars,status,resizable, width=400,height=480');
      }
   }
}

function getCookie(name) { 
   var cookieString = document.cookie;  
   var index = cookieString.indexOf(name + "="); 
   if (index == -1) { return null;  }
   index = cookieString.indexOf("=", index) + 1;  
   var endstr = cookieString.indexOf(";", index); 
   if (endstr == -1) { 
      endstr = cookieString.length;  
   }
   return unescape(cookieString.substring(index, endstr));
}
onunload = grabDomainAndPopUp;