I've done tabbed reports with the cells of the table containing images of the "tabs". The images used the "jump to report" to simulate the tab switching. I had two tabs images each a separate colour, the could would change as you changed tabs (your basic active/inactive tabs.

I even had the reports pass the parameters back and forth. It was cool, but a total Pain in the *** to maintain. It was just something I had wanted to do not a requirement, so I eventually ditched it. I was going to to write it up and post it here, but I never had the time to do it properly. If you want I can have a look to see if I can find it (just no comments about the bad writing 😉 )...