// JavaScript Document
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages(imageId,imagePath) {

	if (document.getElementById && (preloadFlag == true)) {
		document.getElementById(imageId).setAttribute("src",imagePath);
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		gotop_over = newImage("../img/gotop_over.gif");
		preloadFlag = true;
	}
}