Hello I've a problem with Firefox web browser 35.0.1 when I open browser and visit document page with no "expire header" Firefox will set expire date automatically (Maybe it calculate expire date from "last modified header") if I open that page again it will load from cache insteed send HTTP request. So my question is how to manually set global expire cache (for document pages like .html .pdf) to 5 minutes insteed calculate from firefox when I visit document page which no "expire header" because if I disable cache in Firefox it will reload .js .css .jpg etc. again which is unnecessary to reload.

Thanks , prachya