send data to a file composed of frames

Hi guys! I have a login in my site, some pictures and links are differents depending on being logged or not! I thought of using sessions in the whole site, but the disadvantage is that, we can never go back in a the previous page, when using sessions. i thought of using a hidden input in each page but some or rather almost all my pages are composed of frames and therefore the frames don't receive the login status! Can u please help ? THanks _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.