Javascript/ExtendScript/ScriptUI temporary window message

This should be relatively simple. While writing a script for Adobe InDesign CS6, I'd like to have a window/palette appear briefly—say, about two seconds— to notify the user that the end of the script was reached successfully. How can I go about doing this?

try this:

main();
function main(){
      var progress_win = new Window ("palette");
var progress = progress_bar(progress_win, 2, 'Doing Something. Please be patient');
    delay(1);
      progress.value = progress.value+1;
    delay(1);
    progress.parent.close();
    }

// delay function found here
//found here http://www.wer-weiss-was.de/theme157/article1143593.html
  function delay(prmSec){
  prmSec *= 1000;
  var eDate = null;
  var eMsec = 0;
  var sDate = new Date();
  var sMsec = sDate.getTime();
  do {
  eDate = new Date();
  eMsec = eDate.getTime();
  } while ((eMsec-sMsec)<prmSec);
  }
/**
 * Taken from ScriptUI by Peter Kahrel
 * 
 * @param  {Palette} w    the palette the progress is shown on
 * @param  {[type]} stop [description]
 * @return {[type]}      [description]
 */
function progress_bar (w, stop, labeltext) {
var txt = w.add('statictext',undefined,labeltext);
var pbar = w.add ("progressbar", undefined, 1, stop);
pbar.preferredSize = [300,20];
w.show ();
return pbar;
}