Hi Niels,
The problem is not that the buttons have no effect - the problem is that the browse itself is not initializing correctly.
The most likely reason for this is that you have the same procedure twice on the same page. A browse, or form or whatever is just a Div, and it's likely you have ended up with 2 divs on the page with the same name.
Perhaps come to the User Group webinar on Thursday and we'll take a look at your app and see if we can spot the root error.
cheers
Bruce