function preloadImages() {
	var whoweare_over = new Image
		whoweare_over.src = "../images/whoweare-over.gif"
	var visitus_over = new Image
		visitus_over.src = "../images/visitus-over.gif"
	var explore_over = new Image
		explore_over.src = "../images/explore-over.gif"
	var dohistory_over = new Image
		dohistory_over.src = "../images/dohistory-over.gif"
	var forteachers_over = new Image
		forteachers_over.src = "../images/forteachers-over.gif"
	var getinvolved_over = new Image
		getinvolved_over.src = "../images/getinvolved-over.gif"
}

window.onload = preloadImages;

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

function openWindow(theURL,winName,features)
	{
	window.open(theURL,winName,features);
	}