function ShowImage(url,caption,ImgW,ImgH,lang) {
var WinW = ImgW;
var WinH = ImgH + 60;
var msg = 'Chiudi finestra';
if (lang=='en') {msg='Close window'}
options='width=' + WinW + ',height=' + WinH + ',status=no,scrollbars=no,resizable=no,screenX=20,screenY=40,left=20,top=40'
ImgWindow = window.open('','name',options);
var tmp=ImgWindow.document;
tmp.write('' + caption + '');
tmp.write('');
tmp.write('');
tmp.write('
');
tmp.write('' + msg + '
');
tmp.write('');
tmp.close();
}