need a script writer to auto click "ok" on page load using greasemonkey

looking for a script that can be used with firefox with greasemonkey. when the page initially loads, a javascript prompt pops up asking user to click ok or cancel. clicking ok continues loading the page, clicking cancel redirects. need a script that automatically selects ok every time the page loads.

i had a working script already, but the website has changed and now i need an updated script. thanks.

I can fix that
Add me up on skype: PavanBHW

I can help you with the script. Kindly PM for further discussion.