function popup(mylink, windowname, w, h)
{
   if (! window.focus)
      return true;

   var href;

   if (typeof(mylink) == 'string')
      href=mylink;
   else
      href=mylink.href;

   var str = "width=" + w + ", height=" + h + ", scrollbars=yes, resizable=yes";
   window.open(href, windowname, str);

   return false;
}

function popupform(myform, windowname, w, h, resetMainPage)
{
   if (! window.focus)
      return true;

   var str = "width=" + w + ", height=" + h + ", scrollbars=yes, resizable=yes";
   window.open('', windowname, str);
   myform.target=windowname;

   if (resetMainPage)
      window.location.reload();

   return true;
}