timeout =15; // Close window after __ number of seconds?
// 0 = do not close, anything else = number of seconds

function Start(URL, DESC, WIDTH, HEIGHT) {
windowprops = "left=50,top=50,width=" + (WIDTH+50) + ",height=" + (HEIGHT+130);

text = "<html><head><title>Antique Spectacles</title></head><body bgcolor=#669966";

if (timeout != 0) text +=" onLoad=\"setTimeout('window.close()', " + timeout*1000 + ");\"";

text += "><center><img src='" + URL + "'>";

if (timeout != 0) text +="</center><br><left><font face='arial, helvetica' size='-2'>" + DESC + "</left><center><br> This window closes after " + timeout + " seconds.</font>";

text += "</center></body></html>";

preview = window.open("", "preview", windowprops);
preview.document.open();
preview.document.write(text);
preview.document.close();
}

