Report size in portlets

[dtipser]

Hi,
I created a new portal tab with four Cognos Viewers (two columns 50% size). In one, I opened a report and the report resize to full page instead of portlet size. I was thinking that the report will keep the original size of Cognos Viewer (in portlet) and I will get the horizontal and vertical scrooll bar into portlet. That should not be the default behavior? How can I obtain that?

Thanks