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) {
		navHome_on 		= newImage("images/nav_home_1.gif");
		navAbout_on 	= newImage("images/nav_about_1.gif");
		navAgents_on 	= newImage("images/nav_agents_1.gif");
		navContact_on 	= newImage("images/nav_contact_1.gif");
		navFaqs_on	 	= newImage("images/nav_faqs_1.gif");
		navGroup_on 	= newImage("images/nav_group_1.gif");
		navNewsletter_on 	= newImage("images/nav_newsletter_1.gif");
		navWhy_on   	= newImage("images/nav_why_1.gif");
		preloadFlag = true;
	}
}