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) {
		btn_ehe_over = newImage("images/btn_ehe-over.gif");
		btn_dvd_over = newImage("images/btn_dvd-over.gif");
		btn_features_over = newImage("images/btn_features-over.gif");
		btn_presenters_over = newImage("images/btn_presenters-over.gif");
		btn_vendors_over = newImage("images/btn_vendors-over.gif");
		preloadFlag = true;
	}
}


function openWin(URL)
{
aWindow=window.open(URL,"Trailer","toolbar=no,width=420,height=410,status=no,scrollbars=no,resize=no,menubar=no,history=no");
}