Getting error $inactivesubs has no properties

when opening my index.php I'm getting an error $inactivesubs has no properties line 47 and it point me to:

/inc/js/jquery.dolTopMenu.js

			$inactiveSubs.hover( show, hide );

... Try to leave at navigation menu at least 1 element with sub-element  that viewed for all (and guests too) ..recheck

I guess now it's working however looks BAD since I have one big line and the sub item is appearing when mouse over... Is there an elegant way to add if or something and not to execute this js ??

If I could have a small HOME button on the left or right it could be nice..

Yossi

.. seems need or change code a little, or play with CSS styles