Difficult problem with the UpdatePanel and State

Hi,

I have a page with an UpdatePanel that display 5 news story headlines, within the UpdatePanel there are two buttons, back and next, to move the to the next 5 headlines set or to move previous 5 headlines set. Each headline has a link that goes to a new page where the full news story is shown. All this is working great, but if the user is on the second or third set of headlines, then clicks on one of the headlines to go to the page that shows the entire news story, then the user click the back button on the browser to get back to the news story headlines, the news story headlines page will display the first set of news story headlines, not the second or third set where the user originally left from.

How I can let the news story headlines page or the UpdatePanel know on which set the user left the page, so when the user came back via the back browser button, the set they left is displayed?

Hope this makes sense! Thank you.

Please, let me know if I should explain this better or differently, need help with it!