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) {
		news_image = newImage("images/index/news_links.gif");
		press_image = newImage("images/index/press_links.gif");
		services_image = newImage("images/nav/navServices-hi.gif");
		properties_image = newImage("images/nav/navProperties-hi.gif");
		demos_image = newImage("images/nav/navDemos-hi.gif");
		store_image = newImage("images/nav/navStore-hi.gif");
		contact_image = newImage("images/nav/navContact-hi.gif");
		preloadFlag = true;
	}
}

// POPUP WINDOW WITH/WITHOUT SCROLLBARS

function displayWindow(url,width,height,scroll) {
                
x = (640 - width)/2, y = (480 - height)/2;

nWidth = width;
nHeight = height;

if (screen) {
	y = (screen.availHeight - height)/2;
	x = (screen.availWidth - width)/2;
}

if (screen.availWidth > 1800) {
	
	x = ((screen.availWidth/2) - width)/2;
    
}

	window.open(url,'newWin','scrollBars='+scroll+',width='+width+',height='+height+',screenX='+x+',screenY='+y+',top='+y+',left='+x);

}