Grey bar under submenu

Dear support,

Thanks for your great template, very happy with it.

We have one issue with the submenu.

As you can see on our working environment www[dot]aurora1[dot]nl/synergo (we do not to wake up friend Google for this development site) when you open a submenu there is a 5px grey bar underneath it which we do not want there.
I checked with firebug and can see the CSS line responsible however I cannot see where of in which file this is defined.

I hope you can help out.

Thanks and best regards,

J.P.

Inter Delta Communicatie

You can find it in template_css.php as:

#nav li ul {
border-bottom:5px solid <?php echo $topMenuSubTextHover; ?>;
}