function show_img(URL, WIDTH, HEIGHT, title, timeout) {
windowprops = "width=" + (WIDTH+2) + ",height=" + (HEIGHT+2);
text = "" + title + "";
if (timeout != 0) text +="
Preview closes after " + timeout + " seconds.";
text += "";
preview = window.open("", "preview", windowprops);
//preview = window.open("", "preview");
preview.document.open();
preview.document.write(text);
preview.document.close();
}