can Gecko dispatch an event on vertical refresh signal?

[avih]

hi.

i'm currently working on extension ( http://smoothwheel.mozdev.org ) that scrolls the page smoothly with the mouse wheel.

1. regardless of the CPU power, is there any way i can register an event/interrupt, or otherwise synchronise my display section with the monitor's vertical refresh signal?

2. much less efficient, but better than nothing, is there some internal gecko property that will tell me the current monitor refresh rate?

thanx for your help
avih