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) {
		top_navbar_home_03_over = newImage("<? echo $HTTP_ROOT  ?>/images/top_navbar_home_03-over.gif");
		top_navbar_home_05_over = newImage("<? echo $HTTP_ROOT  ?>/images/top_navbar_home_05-over.gif");
		top_navbar_home_07_over = newImage("<? echo $HTTP_ROOT  ?>/images/top_navbar_home_07-over.gif");
		top_navbar_home_09_over = newImage("<? echo $HTTP_ROOT  ?>/images/top_navbar_home_09-over.gif");
		top_navbar_home_15_over = newImage("<? echo $HTTP_ROOT  ?>/images/top_navbar_home_15-over.gif");
		top_navbar_home_17_over = newImage("<? echo $HTTP_ROOT  ?>/images/top_navbar_home_17-over.gif");
		top_navbar_home_19_over = newImage("<? echo $HTTP_ROOT  ?>/images/top_navbar_home_19-over.gif");
		top_navbar_home_21_over = newImage("<? echo $HTTP_ROOT  ?>/images/top_navbar_home_21-over.gif");
		preloadFlag = true;
	}
}