Back Browser Button- Help required

Back Browser Button- Help required

Hi All,

I have below query:
Please let me know how i can do this.

I have a page that used Ajax to generate the a list of result. Then there is a link to click to another detail page. When I'm at the detail page, and click the back button. The list of results page will reload again. Is there anyway to stop the ajax to reload again and cache the result.

One option is saving the pagenumber in cookie and then updating the cookie.
Is there any other way to do this? Please help!!