Problem with the banner of the web page

Question

I get problem with the my web page banner I have many pages in my application with different banner to each page I move between those pages and the banner is change depend to the pages, Up to here is Ok, then when I press back button of the main windows and I want go back, the banner is not change, it’s stay with the same last banner So how can I solve this problem to be change the banner also when I press back button?? I need help PLZ as soon as possible My Regards youth