Scrolling on page with object of Silverlight 3 doesn't work

Question

Hello, I have on the aspx page some Silverlight 3 object that is pretty big. I don't want to use ScrollViewer but I want to make the page scroll. When I set up "overflow:scroll" for this object I cas see page's scrollers but they're not active. If I don't set up something like that the object is clipped stupidly if I make the browser's window smaller. Please help! Thanks