function initMenu() {
	document[page].src = "/flh/images/" + page + "-over.gif";
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImagesArray(array) {
	if (document.images && (preloadFlag == true) && page != array[0]) {
		for (var i=0; i<array.length; i+=2) {
			document[array[i]].src = array[i+1];
		}
	}
	else if (document.images && (preloadFlag == true) && page == array[0]) {
		document[array[0]].src = "/flh/images/" + array[0] + "-over.gif";
	}
}

function changeImages() {
	changeImagesArray(changeImages.arguments);
}

function toggleImages() {
	for (var i=0; i<toggleImages.arguments.length; i+=2) {
		if (selected == toggleImages.arguments[i])      changeImagesArray(toggleImages.arguments[i+1]);
	}
}

var selected = '';
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		initMenu();

		introduction_over = newImage("/flh/images/introduction-over.gif");
		browse_over = newImage("/flh/images/browse-over.gif");
		browse_introduction_sel = newImage("/flh/images/browse-introduction_sel.gif");
		browse_overintroductionsel = newImage("/flh/images/browse-overintroductionsel.gif");
		navigation_over = newImage("/flh/images/navigation-over.gif");
		navigation_browse_sel = newImage("/flh/images/navigation-browse_sel.gif");
		navigation_overbrowsesel = newImage("/flh/images/navigation-overbrowsesel.gif");
		submit_over = newImage("/flh/images/submit-over.gif");
		submit_navigation_sel = newImage("/flh/images/submit-navigation_sel.gif");
		submit_overnavigationsel = newImage("/flh/images/submit-overnavigationsel.gif");
		acknowledge_over = newImage("/flh/images/acknowledge-over.gif");
		acknowledge_submit_sel = newImage("/flh/images/acknowledge-submit_sel.gif");
		acknowledge_oversubmitsel = newImage("/flh/images/acknowledge-oversubmitsel.gif");
		contact_over = newImage("/flh/images/contact-over.gif");
		contact_acknowledge_sel = newImage("/flh/images/contact-acknowledge_sel.gif");
		contact_overacknowledgesel = newImage("/flh/images/contact-overacknowledgesel.gif");
		preloadFlag = true;
	}
}

window.onload=preloadImages;