function preloadImages(){
	var imgArray = new Array('/images/sub/lnav/lnav_menu_arrow.gif', '/images/sub/topnav_home_on.gif', '/images/sub/topnav_about_us_on.gif', '/images/sub/topnav_marketplace_on.gif', '/images/sub/topnav_related_services_on.gif');
	var i=0;
	var objImage = new Image();
	for (i=0; i<imgArray.length; i++){
		objImage.src = imgArray[i];
	}
}

function rollOverNav(nav){
	document.getElementById(nav).src = "/images/sub/topnav_" + nav + "_on.gif";
}

function rollOutNav(nav){
	document.getElementById(nav).src = "/images/sub/topnav_" + nav + ".gif";
}

function imageChange(image, path){
	document.getElementById(image).src = "/images/sub/lnav/lnav_" + path;
}