var popNameWindow = null;  // This must be declared as a global
function MakePop(width,height) {
closePop();
var features = 'width=' + width + ',height=' + height;

 popNameWindow = window.open('','Studio Giovanni',features);
 popNameWindow.focus();
 }

function openNewWindow(URLtoOpen, windowName, windowFeatures)
{
	closePop();
	popNameWindow=window.open(URLtoOpen, windowName, windowFeatures);

 popNameWindow.focus();
 }
function closePop() {
    if ( ( popNameWindow != null ) && ( !popNameWindow.closed ))  {
        // window is still open -> close it
        popNameWindow.close();
        popNameWindow = 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) {
		menu_homeover = newImage("images/menu_homeover.jpg");
		menu_portover = newImage("images/menu_portover.jpg");
		menu_contactover = newImage("images/menu_contactover.jpg");
		menurightover = newImage("images/menurightover.jpg");
		preloadFlag = true;
	}
}