Use Popover in DHTMLX Grid


We are using Twitter Bootstrap, and are attempting to get a popover to appear layered on top of a grid. We have a button in a grid, and when you click on the button, the popover appears. However the popover is hidden by the border of the grid, and by the row below it.

The code for the popover and button are simple:

And I have attached a screenshot of the result. I am guessing that this has something to do with z-index, but I cannot find any examples. I have set the div of the grid, and of all the rows to a low z-index and the popover to a high z-index, but no difference. Any help would be greatly appreciated!