Q: Page load Problem My web page is not loading properly.How to debug this problem?Is there any addon on mozilla for this?

A: Depending on what you need to test you can get away with Firebug - for example XUL page without much XBL.
If you need to test some chrome JavaScript you might use Chromebug: http://getfirebug.com/releases/chromebug/
If Firebug nor Chromebug can help you can try JavaScript Debugger aka Venkman: https://addons.mozilla.org/en-US/firefox/addon/216/
Venkman is probably most powerful but not the friendliest one.
Also, if nothing else helps you can use alerts.

A: It is a static web page, or you have a backend with a specific language?
You can try use firebug to figure out the problems, but if you have an backend application, so you have to debug the app instead of the page.
