function open_window(img, w, h, title) {
if (title==undefined) title="";
var w = window.open("", "", "width="+w+", height="+h+", toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no");
w.document.write(''+title+''+
'' +
'
'+
''+
'');
}