I need the help of a web expert. Whenever I am on any site, the link of the DEAL site will just come down and block my work. I dont know how to disable it. I attached the picture below for better clarification.

you have installed a software or plugin in your browser that is causing the disruption,kindly go through your installed programs and uninstall unnecessary programs, also uninstall unnecessary plugins and extensions in your browser

Thank you. What i did was that, I place your suggestion on google.com ''How to install unnecessary plugin in Moxillafirefox'' and it brought out solution that I should try to refresh Firefox. Which I did.