var childWindow;
var childWindowWidth="447";
var childWindowHeight="414";
function OpenChildWindow(url)
{
  CloseChildWindow();
  childWindow = window.open(url, "childWindow", "scrollbars=no,width="+childWindowWidth+",height="+childWindowHeight);
}
function CloseChildWindow()
{
  if ((childWindow != null) && (!(childWindow.closed)))
  {
    childWindow.close();
  }
}
if (document.all)
{
  window.onfocus=CloseChildWindow;
  window.onunload=CloseChildWindow;
}
else
{
  window.captureEvents(Event.MOUSEDOWN | Event.ONUNLOAD);
  window.onmousedown=CloseChildWindow;
  window.onunload=CloseChildWindow;
}