javascript for checking user

[Showjumper]

Why would need javascript when formsauthentication has methods for checking
and redirecting the user already.

 

[Peter Rilling]

You *never* want to trust the client/browser to validate authentication.

In the best case JavaScript might be turned of. In the worst case, someone
has written their own browser or client to access your pages thereby
bypassing your security.

 

[noor]

hi,
can any one tell me a javascript that can be called on mouseover event of a
html link control .
script can check from session either a user is login or not
In the case of Login it will redirect to the given url.
In the case of not Login it will prompt the user that u r not login kindly
login.

actually that link leads a user to Download Software. but this feature is
only for registerd user.

kindly help me. it will be best if u give me a script for it.
Thanks
Noor