I use a submit button to go to next page with posting a value. When i click on back (button in the browser) to go back to previous page, it says "Page is expired. Information must be send to display this page erc etc". I don't want to face this popup question.
If you use your own button to go to the page (by address) you shouldn't have the problem. On the other hand, if you wanted to go back with values you previously entered populated into a form, then the second page will need a form with your submit button and some hidden variables to pass back the values (with the values in the original form defined with variable names that you will set).