Normally, when a webserver uses JSP, they instruct Firefox that the content type of the page is text/html, so Firefox doesn't treat those .jsp pages differently from other server technologies.

Could you provide a link to a page that is not showing properly and describe how it differs from what you expect?

More generally:

When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.

(1) Bypass Firefox's Cache

Use Ctrl+Shift+r to reload the page fresh from the server.

Alternately, you also can clear Firefox's cache completely using:

"3-bar" menu button (or Tools menu) > Options > Advanced

On the Network mini-tab > Cached Web Content : "Clear Now"

If you have a large hard drive, this might take a few minutes.

(2) Remove the site's cookies (save any pending work first). While viewing a page on the site, try either:

• right-click and choose View Page Info > Security > "View Cookies"
• (menu bar) Tools > Page Info > Security > "View Cookies"
• click the padlock or globe icon in the address bar > More Information > "View Cookies"

In the dialog that opens, you can remove the site's cookies individually.

Then try reloading the page. Does that help?

You can check the Net log and the Network log in the Web Console (Firefox/Tools > Web Developer) to check the HTTP request and response headers

• https://developer.mozilla.org/Tools/Network_Monitor