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) {
    nav_about_over = newImage("images/nav_about_over.gif");
	nav_interdisciplinary_over = newImage("images/nav_interdisciplinary_over.gif");
	nav_techtransfer_over = newImage("images/nav_techtransfer_over.gif");
	nav_grants_over = newImage("images/nav_grants_over.gif");
	nav_limitedsubs_over= newImage("images/nav_limitedsubs_over.gif");
	nav_policies_over = newImage("images/nav_policies_over.gif");
    nav_researchpro_over = newImage("images/nav_researchpro_over.gif");
    nav_publications_over = newImage("images/nav_publications_over.gif");
    nav_graduateschool_over = newImage("images/nav_graduateschool_over.gif");
    nav_contacts_over = newImage("images/nav_contacts_over.gif");
	
	nav_arp_anesthesia_over = newImage("images/nav_arp_anesthesia_over.gif");
	nav_arp_facilities_over = newImage("images/nav_arp_facilities_over.gif");
	nav_arp_health_over = newImage("images/nav_arp_health_over.gif");
	nav_arp_purchasing_over = newImage("images/nav_arp_purchasing_over.gif");
	nav_arp_newsletter_over = newImage("images/nav_arp_newsletter_over.gif");
	nav_arp_drugs_over = newImage("images/nav_arp_drugs_over.gif");
	nav_arp_laws_over = newImage("images/nav_arp_laws_over.gif");
	nav_arp_endpoints_over = newImage("images/nav_arp_endpoints_over.gif");
	nav_arp_guidelines_over = newImage("images/nav_arp_guidelines_over.gif");
	nav_arp_euthanasia_over = newImage("images/nav_arp_euthanasia_over.gif");
	nav_arp_occupational_over = newImage("images/nav_arp_occupational_over.gif");
	nav_arp_surveillance_over = newImage("images/nav_arp_surveillance_over.gif");
	nav_arp_surgery_over = newImage("images/nav_arp_surgery_over.gif");
	nav_arp_training_over = newImage("images/nav_arp_training_over.gif");
	nav_arp_services_over = newImage("images/nav_arp_services_over.gif");
	nav_arp_links_over = newImage("images/nav_arp_links_over.gif");
	
	nav_ics_about_over = newImage("images/nav_ics_about_over.gif");
	nav_ics_people_over = newImage("images/nav_ics_people_over.gif");
	nav_ics_resources_over = newImage("images/nav_ics_resources_over.gif");
	nav_ics_research_over = newImage("images/nav_ics_research_over.gif");
	nav_ics_news_over = newImage("images/nav_ics_news_over.gif");
	nav_ics_publications_over = newImage("images/nav_ics_publications_over.gif");
	nav_ics_contacts_over = newImage("images/nav_ics_contacts_over.gif");
	
    preloadFlag = true;
  }
} 

// IRO Show-Hide Functions ************************************************************
function showAndHide(theId)
{
   var el = document.getElementById(theId)
   if (el.style.display=="none")
   {
      el.style.display="block"; //show element
   }
   
   else
   {
      el.style.display="none"; //hide element
   }
}

function toggleVisibility(divider, image, isExpandedPath, notExpandedPath){
	if(divider.style.display == "none"){
		divider.style.display='block';
		image.src = isExpandedPath;
	}else{
		divider.style.display='none';
		image.src = notExpandedPath;
	}
}
function show(divider, image, isExpandedPath, notExpandedPath){
	if (divider != null){
		divider.style.display='block';
	}
	if (image != null)
		image.src = isExpandedPath;
}
function hide(divider, image, isExpandedPath, notExpandedPath){
	if (divider != null){
		divider.style.display='none';
	}
	if (image != null)
		image.src = notExpandedPath;
}

//document.writeln("<link rel=\"shortcut icon\" href=\"http://www.research.psu.edu/images/psuicon.png\" />");
document.writeln("<link rel=\"shortcut icon\" href=\"http://www.research.psu.edu/images/shield.ico\" />");