target on html form differs depending on if user input is sucessf ul or not ..

["Charlesworth, Chico" <Ch...@softwareag.co.uk>]

I've got a login page within a frame, and if the login is successfull i want
to forward on to the main page, but on a different target, i.e "_top". I do
this by using the target attribute in the html:form tag. This is fine, but
when the login fails, i.e. the username and/or password are invalid, i dont
want it to go to a different target.

Any ideas on how i could accomplish this?

cheers,
chico.

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