var preloadFlag = false;

function setPreloadFlag(arg) {
	preloadFlag = arg;
}

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

function changeImages(elem_id,image) {
	if (document.images && (preloadFlag == true)) {
		var foo = false;
		foo = true;
		var elem = document.getElementById(elem_id);
			elem.src = image;
	}
}