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) {
		Button_Home_over = newImage("images/Button_Home-over.gif");
		Button_Services_over = newImage("images/Button_Services-over.gif");
		Button_Who_over = newImage("images/Button_Who-over.gif");
		Button_WhatsNew_over = newImage("images/Button_WhatsNew-over.gif");
		Button_Carriers_over = newImage("images/Button_Carriers-over.gif");
		Button_Questions_over = newImage("images/Button_Questions-over.gif");
		Button_Contact_over = newImage("images/Button_Contact-over.gif");
		preloadFlag = true;
	}
}

// this function is what creates the popup window 
function OpenPopUp(strFile, thewidth, theheight) {
  window.open(strFile,'Add','width=' + thewidth + ',height=' + theheight + ',top=50,left=50,scrollbars=1,resizable=1,status=1');
}