Alter Drop Down Menus

[davepurcell]

So we have some drop down menus in our navbar.

One of the codes is

<td id="events"><a href="#events" >Events</a>
<script type="text/javascript"> vbmenu_register("events");</script></td>

These open once clicked.

Is it possible to make these open (drop down) on hover over?
I've had a play but can't find anything