Invite friend problem

I discovered that tellfriend.php has one problem. When email to friend successfully sent it must return green message box, telling "Email sent", and hopefully close the JS window.

But it only clears form, and users will think that they invite hasn't been mailed.

UPD:

I use Dolphin 6.1.1 strongly modified by me, but I tested same actions on Boonex (http://www.boonex.us), and on Aramis's (http://www.demozzz.ru) demosites, running last version of Dolphin, and get the same result.