function DoTallie()
{
   launchCenter('tallie.html', 'center', 600, 640); 
}

function DoBrowserCaveat()
{
   launchCenter('BrowserCaching.html', 'center', 400, 440); 
}
function launchCenter(url, name, height, width) 
{
  var str = "toolbar=0,location=0,directories=0,status=1,menubar=0,scrollbar=0,resizable=0, height=" + height + ",innerHeight=" + height;
  str += ",width=" + width + ",innerWidth=" + width;
  if (window.screen) 
  {
    var ah = screen.availHeight - 30;
    var aw = screen.availWidth - 10;
    var xc = (aw - width) / 2;
    var yc = (ah - height) / 2;
    str += ",left=" + xc + ",screenX=" + xc;
    str += ",top=" + yc + ",screenY=" + yc;
  }
  return window.open(url, name, str);
}
function launchPhotos(url, name, height, width) 
{
  var str = "toolbar=0,location=0,directories=0,status=1,menubar=0,scrollbar=1,resizable=1, height=" + height + ",innerHeight=" + height;
  str += ",width=" + width + ",innerWidth=" + width;
  if (window.screen) 
  {
    var ah = screen.availHeight - 30;
    var aw = screen.availWidth - 10;
    var xc = (aw - width) / 2;
    var yc = (ah - height) / 2;
    str += ",left=" + xc + ",screenX=" + xc;
    str += ",top=" + yc + ",screenY=" + yc;
  }
  return window.open(url, name, str);
}