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) {
		btn_home_over = newImage("../images/btn_home-over.gif");
		btn_home_down = newImage("../images/btn_home-down.gif");
		btn_contact_over = newImage("../images/btn_contact-over.gif");
		btn_contact_down = newImage("../images/btn_contact-down.gif");
		btn_whatIsIt_over = newImage("../images/btn_whatIsIt-over.gif");
		btn_whatIsIt_down = newImage("../images/btn_whatIsIt-down.gif");
		btn_getIt_over = newImage("../images/btn_getIt-over.gif");
		btn_getIt_down = newImage("../images/btn_getIt-down.gif");
		btn_demo_over = newImage("../images/btn_demo-over.gif");
		btn_demo_down = newImage("../images/btn_demo-down.gif");
		btn_Members_over = newImage("../images/btn_Members-over.gif");
		btn_Members_down = newImage("../images/btn_Members-down.gif");
		btn_news_over = newImage("../images/btn_news-over.gif");
		btn_news_down = newImage("../images/btn_news-down.gif");
		btn_support_over = newImage("../images/btn_support-over.gif");
		btn_support_down = newImage("../images/btn_support-down.gif");
		btn_faq_over = newImage("../images/btn_faq-over.gif");
		btn_faq_down = newImage("../images/btn_faq-down.gif");
		btn_links_over = newImage("../images/btn_links-over.gif");
		btn_links_down = newImage("../images/btn_links-down.gif");
		preloadFlag = true;
	}
}