if (document.images){
navigatePublications=new Image
navigatePublicationsRollover=new Image
navigateResources=new Image
navigateResourcesRollover=new Image
navigateRegions=new Image
navigateRegionsRollover=new Image
navigateForms=new Image
navigateFormsRollover=new Image
navigateNewsletters=new Image
navigateNewslettersRollover=new Image

navigatePublications.src="images/navigatePublications.gif"
navigatePublicationsRollover.src="images/navigatePublicationsRollover.gif"
navigateResources.src="images/navigateResources.gif"
navigateResourcesRollover.src="images/navigateResourcesRollover.gif"
navigateRegions.src="images/navigateRegions.gif"
navigateRegionsRollover.src="images/navigateRegionsRollover.gif"
navigateForms.src="images/navigateForms.gif"
navigateFormsRollover.src="images/navigateFormsRollover.gif"
navigateNewsletters.src="images/navigateNewsletters.gif"
navigateNewslettersRollover.src="images/navigateNewslettersRollover.gif"
}

function chgImg(imgField,newImg) {
		if (document.images) {
		   document[imgField].src=eval(newImg + ".src")
		   }
		}