<!-- hide this script from old browsers

function swapImage(imageName, type)  {
  var newImage = "";

  if (type == "on")  {
    newImage = imageName + "on";
  }
  else  {
    newImage = imageName + "off";
  }

  if (document.images)  {
    document.images[imageName].src = ' images/' + newImage + '.gif';
  }
}

if (document.images) {

    homeon = new Image();
	homeon.src = "../images/HNOhome.gif";
	homeoff = new Image();
	homeoff.src = "../images/HNhome.gif";
	
	registrationon = new Image();
	registrationon.src = "../images/HNOregistration.gif";
	registrationoff = new Image();
	registrationoff.src = "../images/HNregistration.gif";

	programson = new Image();
	programson.src = "../images/HNOprograms.gif";
	programsoff = new Image();
	programsoff.src = "../images/HNprograms.gif";

	speakerson = new Image();
	speakerson.src = "../images/HNOspeakers.gif";
	speakersoff = new Image();
	speakersoff.src = "../images/HNspeakers.gif";

	attendeeson = new Image();
	attendeeson.src = "../images/HNOattendees.gif";
	attendeesoff = new Image();
	attendeesoff.src = "../images/HNattendees.gif";

	travelon = new Image();
	travelon.src = "../images/HNOtravel.gif";
	traveloff = new Image();
	traveloff.src = "../images/HNtravel.gif";

	forumon = new Image();
	forumon.src = "../images/HNOforum.gif";
	forumoff = new Image();
	forumoff.src = "../images/HNforum.gif";
	
	wikion = new Image();
	wikion.src = "../images/HNOwiki.gif";
	wikioff = new Image();
	wikioff.src = "../images/HNwiki.gif";
}

function On(imgName) {
	if (document.images)
	document.images[imgName].src = eval(imgName + "on.src");
}

function Off(imgName) {
	if (document.images)
		document.images[imgName].src = eval(imgName + "off.src");
}

defaultStatus = ' ';
//Child Window Handler
var childWindow=null;
var childUrl=null;  

function openChildWindow(url,name,features){
	//clean up old window
	if(childWindow != null && url != childUrl){ 
		closeChildWindow(); 
	}
	if(childWindow == null) {
		childUrl = url;
		childWindow = window.open(url,name,features);
	} else {
		childWindow.focus();
	}
}

function closeChildWindow(){
	if(childWindow != null){
		if(!childWindow.closed){ 
			childWindow.close(); 
		}
		childWindow=null;
	}
}
// done hiding from old browsers -->