function preloadImages() {
	var howtogethere = new Image
		howtogethere.src = "images/howtogethere-over.gif"
	var newark = new Image
		newark.src = "images/newark-over.gif"
	var whoweare = new Image
		whoweare.src = "images/whoweare-over.gif"
	var visitus = new Image
		visitus.src = "images/visitus-over.gif"
	var explore = new Image
		explore.src = "images/explore-over.gif"
	var dohistory = new Image
		dohistory.src = "images/dohistory-over.gif"
	var forteachers = new Image
		forteachers.src = "images/forteachers-over.gif"
	var getinvolved = new Image
		getinvolved.src = "images/getinvolved-over.gif"
	var exhibits = new Image
		exhibits.src = "images/exhibits-over.gif"
	var pubprograms = new Image
		pubprograms.src = "images/pubprograms-over.gif"
	var accessible = new Image
		accessible.src = "images/accessible-over.gif"
}

window.onload = preloadImages;

function changeImages(sName,sImage)
	{
	document.images[sName].src = sImage
	}