Problem with "expired page"

[Geminist]

Here it is:
Page A select the table and list the content.
You can add or delete one of them.
If you add one,page A jumps to page B.
Page B allows you to select items from another table.
After the updating,I wanna use "javascipt:history.back(1)"
to return to page A,but it tells me "page expired" and "security problem"
btw:I can't simply link page B to page A,because in Page A an object is used.
Waiting for help~~

 

[janhouse00]

Are you using a combination of session and POST method? One of the solutions is to modify your php.ini and search for a line called session.cache_limiter, leave it blank should do the trick. Or try to add session.cache_limiter("public" on the top of your page, it must be outputed prior to any html/php code. Try to use GET method instead if you want but there would be a potential security issue you know that Hope this helps..