PLEASE HELP!!!Jquery navigation menu

PLEASE HELP!!!Jquery navigation menu

How to disable active state when the pointer or cursor is not in the buttons? Because in my code the mouseover stay even if the cursor is not in the button.
Here is the link http://bharce.com/hostdime2/index.html

Here is the code

<script type="text/javascript">
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script>
<script type="text/javascript">
try {
var pageTracker = _gat._getTracker("UA-3466240-2");
pageTracker._trackPageview();
} catch(err) {}

$('#nav-container-main li').mouseover(function(){
$('#nav-container-main li').removeClass('activetab');
$(this).addClass('activetab');
$('#nav-container-sub ul').hide();
which = $(this).children('a').attr('href');
if (which.substr(0,1) == '#') {
$(which).show();
return false;
} else {
window.location = which;
}
});
</script>

Thanks for your help in advance!!