dashboards in websphere vs tomcat

I have a dashboard that displays several reports.  This works fine when I deploy on tomcat, but when I deploy on websphere all the report frames are displaying as if theye were in a main report.  Each frame shows the jasperserver main menu bar, image etc.  It is really ugly.)

Any clues how I can solve this ?  I experimented with adding the decorate=no to the url but had no luck.