Report Background issue while migrating from CR9 to CR13

Hi,

We are migrating one of out asp.net applications which is integrated with Crystal Reports 9. As part of the migration, we are migrating Crystal reports also from CR9 to CR13. In CR9 the report content is loading on a aspx page where aspx page background is an image. report background is transparent so that report content is lying directly on the aspx page.

But, in  CR13, though the aspx page background has an image, we are unable to make the report content transparent such that report content lies on the aspx page directly. The report content is displaying in  report page with white background and we are unable to make it transparent.

Any suggestions here?????

Thanks in Advance,

Krishna