Should make [about](https://addons.mozilla.org/en-US/firefox/addon/about-startup/):[startup](https://developer.mozilla.org/en/Extensions/Performance_best_practices_in_extensions) happy! `setTimeout()` is exists, but I can't use it easiliy in gecko2.0+: ain't starts on browser startup, but on disable/enable. Didn't tried under gecko1.9x.
