mrbahr2003

I have a report with 3 sub-reports in the detail section, one following the next. After the 3 sub-reports, I have some other report details. The issue is if one or more of the sub-reports is empty, then when the report prints, it leaves a white space where the subreport was inserted. Is there a way to collapse the detail section if a sub-report is empty? Or is there a way to have the sub-report with a height of 0 and have it expand automatically if there is data? Thanks