timeout =0; // Close window after __ number of seconds?
// 0 = do not close, anything else = number of seconds
function Start(URL, WIDTH, HEIGHT) {
windowprops = "left=50,top=50,width=780,height=520";
text = "Preview";
if (timeout != 0) text +="
Preview closes after " + timeout + " seconds.";
text += "";
preview = window.open("", "preview", windowprops);
preview.document.open();
preview.document.write(text);
preview.document.close();
}