function OpenPopWindow(url, w, h)
{
	var center = '';
	if(screen.width != null && screen.height != null)
	{
		var top = (screen.height - h) / 2;
		var left = (screen.width - w) / 2;
		
		center = ',top=' + top + ',left=' + left;
	}
	var win = window.open( url, 'Visualisations','height=' + h + ',width=' + w + ',resizable=yes,scrollbars=yes' + center, true);
	if(win == null)
	{
		alert('You might have a popup blocker installed. Please configure it to allow popups for njWineGallery.com');
	}
}