Database records Locking Problem

hi all,
I had a web page in which i had a pop up window, thru which i ll
display some list of values, where the user can select the multiple
records. Once he selects them,the records gets locked (by updating
those rows with session id), they gets populated in the parent
window, then he can perform some other operation, then the commit/rollback operation takes place.
The problem is once the records are populated in the parent window,
there is a chance to close the window, which causes the rows to get locked.
(i mean connection is not closed).
If the user tries to open the same window again, it never gets opened up,
as the records being locked already. And i do even have a way to find the unclosed connections to close them
please anybody can suggest a good solution for this problem?

hi duffymo,
Yah, you are correct, but the problem is not with the closing of pop up window.
The problem is with the closing of main window.
In the popup window, I have a button to select records, which causes
the records to get locked and the pop up to gets closed and the records get populated in the main window.
could you suggest something, so that i could communicate the closing event
to the server. I think IE dont have any event of window closing. So what I have to do?
Or atleast can I do something like, blocking window closing and the user has to click on logout button, there I can close the connection.
thanks & regards
srinivas.M
.

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