var popupLinkConfig = new Array;

// popupLinkConfig["classname"] = new Array ( "targetname", "width=550,height=350,scrollbars=yes,resizable=yes,status=yes,toolbar=yes,location=yes,menubar=yes");
popupLinkConfig["popup"]    = new Array ( "", "width=325,height=425,scrollbar=yes,location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no");
popupLinkConfig["glossary"] = new Array ( "help", "width=615,height=465,resizable=yes,scrollbar=yes");

<!-- ImageReady Preload Script (MajesticF.psd) -->

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		Majestic_16_down = newImage("images/Majestic_16-down.gif");
		Majestic_16_over = newImage("images/Majestic_16-over.gif");
		Majestic_17_down = newImage("images/Majestic_17-down.gif");
		Majestic_17_over = newImage("images/Majestic_17-over.gif");
		Majestic_18_over = newImage("images/Majestic_18-over.gif");
		Majestic_18_down = newImage("images/Majestic_18-down.gif");
		Majestic_19_down = newImage("images/Majestic_19-down.gif");
		Majestic_19_over = newImage("images/Majestic_19-over.gif");
		Majestic_20_down = newImage("images/Majestic_20-down.gif");
		Majestic_20_over = newImage("images/Majestic_20-over.gif");
		preloadFlag = true;
	}
}
<!-- End Preload Script -->


// ==========================================================================
window.onload = initPage;  
// Note: Make sure that no other javscripts assign a fuction to window.onload
// There can be only one function tied to window.onload at a time.

function initPage() {
  initPopupLinks();
  // place here any other code you wish to run when the page loads.
 preloadImages();
}

function initPopupLinks()
{
  if (!document.getElementsByTagName) return true;
  var pageLinks = document.getElementsByTagName("a");
  for (var i = 0; i < pageLinks.length; i++) 
  {
    if (((pageLinks[i].className != null) && 
         (pageLinks[i].className != "")) ||
        ((pageLinks[i].parentNode.className != null) && 
         (pageLinks[i].parentNode.className != "")))
    {
      var linkClass = " " + pageLinks[i].className + " ";
      if ((linkClass == "  ") && (pageLinks[i].parentNode.className != ""))
      {
        linkClass = " " + pageLinks[i].parentNode.className + " ";
      }
      for (var theKey in popupLinkConfig) 
      {
        if (linkClass.indexOf(" " + theKey + " ") > -1)
        {
          if ((pageLinks[i].target == "") || (pageLinks[i].target == null))
          {
            pageLinks[i].target = (popupLinkConfig[theKey][0] != "") ? popupLinkConfig[theKey][0] : theKey;
          }
          pageLinks[i].settings = popupLinkConfig[theKey][1];
          pageLinks[i].onclick = popUp;
        }
      }
    }
  }
  return true;
}

function popUp()
{
  newWin = window.open(this.href, this.target, this.settings);
  newWin.focus();
  return false;
}