Getting rid of PDF, XLS buttons on direct URL

[kurky17]

Hi,

I'm going to use the direct URL to generate my report and as much as possible, I only want the charts to show.  I already managed to remove the heading by doing decorate=no.  Now I want to get rid of the small buttons for PDF, XLS etc on the upper left corner of the page.    Anybody knows how to do it?  Ideally it would be just be another URL parameter like buttons=no.

Thanks,

Michelle