How to hide Ajax pie chart legends (3.5 version) or click event for ajax pie chart???

I want to hide legends of a ajax pie chart but looks like there is no property for the same.

Any way to handle this?

Or Anyway to create a click event for Pie chart? My requirement is to show data in a grid based on click of pie chart area.

E.g Pie chart shows Marks of three subjects. On click on each subject on pie chart, show subject details in a grid.

Thanks in advance...