I have been thinking about this and really, you could (If a hard requirement) make these buttons or text boxes with actions that hide and show the charts. To do that you'd:
1. Create a text box with the text and style you want
2. Orient it so that it is where you normally have the tabs for your container
3. Create an action that changes a show/hide variable
4. Tie the show conditional of your graph to that option
let me know if this isn't clear. It certainly isn't an ideal solution nor am I certain of the performance trade off to do it this way versus using the container, but it will help you meet a hard requirement.
