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) {
		nav_offer_over = newImage("/images/nav_offer_hv.gif");
		nav_benefit_over = newImage("/images/nav_benefit_hv.gif");
		nav_customers_over = newImage("/images/nav_customers_hv.gif");
		nav_aboutus_over = newImage("/images/nav_aboutus_hv.gif");
		nav_resources_over = newImage("/images/nav_resources_hv.gif");
		nav_community_over = newImage("/images/nav_community_hv.gif");

		online_featureplan_over = newImage("/images/online_demo_featureplan_hv.gif");
		online_ideascope_over = newImage("/images/online_demo_ideascope_hv.gif");

		online_featureplan__home_over = newImage("/images/online_demo_featureplan_home_hv.gif");
		online_ideascope__home_over = newImage("/images/online_demo_ideascope_home_hv.gif");

		preloadFlag = true;
	}
}