jQuery: undo things when history:back?

Question

i know this question might be too easy, but i have no idea how to solve this.

when submitting a form i'll fadeIn a Loading-Image. When submitting the form was a success the page redirects blabla...

Now when I hit the BACK Button in my browser and i visit the previous page with the form the Loading-Image is still shown.

How can i make that hide again?

regards

Answer 1

and what if you do a POST/Redirect/GET, which solves the duplicate form submitting as well?