function openWindow(imageFile, title, width, height) {
	title = (typeof(title) == 'string' && title.match(/\S/)) ? title : 'gallery';
	width = width ? ',width='+width : '';
	height = height ? ',height='+height : '';
	scroll_resize = (width || height) ? ",scrollbars=0,resizable=0" : ",scrollbars=1,resizable=1";
  msg=window.open(imageFile, title,"status=0,location=0,toolbar=0,directories=0,menubar=0" + scroll_resize + width + height);
}