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) {
		home_over = newImage("images/home-over.gif");
		beginning_over = newImage("images/beginning-over.gif");
		director_over = newImage("images/director-over.gif");
		program_over = newImage("images/program-over.gif");
		tools_over = newImage("images/tools-over.gif");
		glossary_over = newImage("images/glossary-over.gif");
		training_tips_over = newImage("images/training-tips-over.gif");
		resources_over = newImage("images/resources-over.gif");
		speaking_events_over = newImage("images/speaking-events-over.gif");
		comments_over = newImage("images/comments-over.gif");
		contact_over = newImage("images/contact-over.gif");
		acknowlegdements_over = newImage("images/acknowlegdements-over.gif");
		journal_over = newImage("images/journal-over.gif");
		preloadFlag = true;
	}
}