fix #16, get the career tables to slide up and down

... without some of the overhead I had in the #16 pull request.

Fixed by removing the anchor tag between the `<tr>` and `<td>` tags. You can't have arbitrary tags between those in the dom tree, so webkit decided to move them before the table. That caused the `toggleSlide` to be applied to a misplaced invisible link instead of the table.

I also added a div around the table, because jQuery's `toggleSlide` doesn't look good on tables themselves.