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) {
		snproducts_over = newImage("images/snproducts-over.gif");
		sncontact_over = newImage("images/sncontact-over.gif");
		snfum_over = newImage("images/snfum-over.gif");
		snfaqs_over = newImage("images/snfaqs-over.gif");
		snhotdeals_over = newImage("images/snhotdeals-over.gif");
		tnhomepage_over = newImage("images/tnhomepage-over.gif");
		tntheater_over = newImage("images/tntheater-over.gif");
		tncar_over = newImage("images/tncar-over.gif");
		tnmusic_over = newImage("images/tnmusic-over.gif");
		preloadFlag = true;
	}
}