function NewWindow(mypage, myname, w, h, scroll, resize) {
      var winl = (screen.width - w) / 2;
      var wint = (screen.height - h) / 2;
     winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable='+resize+',toolbar=no,location=no,status=no,menubar=no,dependent=no'
        win = window.open(mypage, myname, winprops)
     if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
 }


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) {
		but_home_over = newImage("/images/but-home-over.gif");
		but_products_over = newImage("/images/but-products-over.gif");
		but_services_over = newImage("/images/but-services-over.gif");
		but_news_over = newImage("/images/but-news-over.gif");
		but_about_over = newImage("/images/but-about-over.gif");
		but_contact_over = newImage("/images/but-contact-over.gif");
		preloadFlag = true;
	}
}