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_about_us_o = newImage("/images/nav-about-us-o.gif");
		nav_bpo_o = newImage("/images/nav-bpo-o.gif");
		nav_recovery_o = newImage("/images/nav-recovery-o.gif");
		nav_industry_o = newImage("/images/nav-industry-o.gif");
		nav_careers_o = newImage("/images/nav-careers-o.gif");
		nav_contact_o = newImage("/images/nav-contact-o.gif");
		preloadFlag = true;
	}
}
//window.onload = preloadImages();