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

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		lwibmain_01 = newImage("../images/lwibmain_01.gif");
		lwibmain_02 = newImage("../images/lwibmain_02.gif");
		preloadFlag = true;
	}
}