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];
		}
	}
}

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

function winOpen(winName,url,W,H){
  var newin=window.open(url,winName,'toolbar=no,menubar=no,directories=no,location=no,resizable=no,scrollbars=yes,status=no,width='+W+',height='+H+'');
  newin.focus();
}