how to call a function in Firefox extension from a html button

Question

How to call a Javascript function declared in my extension, using a html button from my web page?

I have a html page, with a button inside. When the user click the

Answer 1

Try to put this at the beginning of your javascript function that tries to access a local file:

netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');

This will give the user the choice as to whether they want to allow your code to access the local filesystem.