I want to shift the tooltip a few pixels to the right, so the arrow is in the center of the cell where the cursor is (currently, it's positioned at (0,0), that is, top left). This is my code:

```
 $("rect.cell").tooltip({
    title: "hola",
    placement: "top"
  });

```

and an image:
![enter image description here](https://i.stack.imgur.com/Y2ak8.png)

Ideally I'd like to do this using javascript, so I can update the number of pixels if I change the size of the cells.