var win = null;
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) {
		home_over = newImage("images/home-over.gif");
		contact_over = newImage("images/contact-over.gif");
		map_over = newImage("images/map-over.gif");
		search_over = newImage("images/search-over.gif");
		preloadFlag = true;
	}
}
function view(nUrl, nwidth, nheight){
  try {
   win.close();
  } 
  catch(err) {
  }

  win = null;
  win=window.open(nUrl, '', 'width='+nwidth+',height='+nheight+',resizable=no,scrollbars=no,menubar=no');
}