Content overlapping page from scrollpane! please help!

Hello,

This is the second time this has happened to me and I still don’t get it. When I have the scrollpane component load a JPG file from another internet location the JPG file scrolls over the entire page instead of staying within the paramaters of the scrollpane. It does this randomly at times. Please take a look at it here - http://tagnights.com/nineonnine/index.html Click on the menus button to see what I mean! If someone can help me, I’d highly appreciate it! Thanks!