// JavaScript for Rollover Images

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) {
		home_hi = newImage("centurian_images/nav/home_hi.jpg");
		company_hi = newImage("centurian_images/nav/company_hi.jpg");
        hose_hi = newImage("centurian_images/nav/hose_hi.jpg");
		contact_hi = newImage("centurian_images/nav/contact_hi.jpg");
		links_hi = newImage("centurian_images/nav/links_hi.jpg");
	    catalogue_hi = newImage("centurian_images/nav/catalogue_hi.gif");
        sitemap_hi = newImage("centurian_images/nav/sitemap_hi.jpg");
		preloadFlag = true;
	}
}