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) {
		samples_over = newImage("images/samples-over.gif");
		price_over = newImage("images/prices-over.gif");
		home_over = newImage("images/home-over.gif");
		preloadFlag = true;
	}
}

var win = '';
function popitup(winURL, ht, wid)
{
  win = window.open(winURL, "nw", "height="+ht+",width="+wid+",scrollbars,resizable,left=0,top=0,screenX=0,screenY=0");
   if (win.opener == null) win.opener = self;
   win.focus();
}