function detect_browser() {
    var rv = -1;
    if (navigator.appName == "Microsoft Internet Explorer")
    {
       var ua = navigator.userAgent;
       var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
       if (re.exec(ua) != null) {
           rv = parseFloat( RegExp.$1 );
           // Return specific IE version
           return rv;
       }
       else
       {
          return -1;
       }
    } else {
       return -1;
    }
 }

 function should_block_popups() {
    var browser_type = detect_browser();
   if ((browser_type == -1) || (browser_type == "8")) {
       return false;
    } else
    {
		return true;
    }
 }