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) {
		bottom_feline_over = newImage("images/bottom_feline-over.gif");
		bottom_feral_over = newImage("images/bottom_feral-over.gif");
		bottom_booster_over = newImage("images/bottom_booster-over.gif");
		bottom_mentor_over = newImage("images/bottom_mentor-over.gif");
		bottom_voucher_over = newImage("images/bottom_voucher-over.gif");
		bottom_voucher_bottom_feral_over = newImage("images/bottom_voucher-bottom_feral.gif");
		buttons_about_us_over = newImage("images/buttons_about_us-over.gif");
		buttons_booster_over = newImage("images/buttons_booster-over.gif");
		buttons_whats_new_over = newImage("images/buttons_whats_new-over.gif");
		buttons_help_over = newImage("images/buttons_help-over.gif");
		buttons_help_buttons_contact_over = newImage("images/buttons_help-buttons_contac.gif");
		buttons_contact_over = newImage("images/buttons_contact-over.gif");
		preloadFlag = true;
	}
}