Form Authentication

Hi
I have one big trouble in ASP.NET.
I am using form authentication[With role management] in my application.
Once I click on login button, the current page url[the current page before clicking login button] comes as return url in the address bar.
This is creating problem to me.
Is there any way that by clicking login button will not append return url. (However if we make request to anonymous page then it will come as a return url)

 
Thanks,
Abdul Javed Khan
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