[Chameleon] small change to Popup.php

[bartvde@xs4all.nl]

Hi Paul, cc list,

we did a small change to Popup.php, would be nice if this one could make
it to the CVS version.

We added a js focus() call to the window handle to make sure the popup
comes up after it has been minimized by a user.

$szResult  = "hWindow = window.open('".$this->GetPopupURL().
                     "', '".$this->GetPopupName()."', '".
                     $this->GetPopupOptions()."');";
$szResult .= "hWindow.focus();";

Best regards,
Bart