$user = JFactory::getUser(); // get usergroup
$groups = $user->get('groups');
foreach($groups as $group)
{
if ($group=="10") //
{
echo '<script type="text/javascript">
jQuery(document).ready(function(){
jQuery('.cat-list-row0:nth-of-type(6)').css('display', 'none');
});
</script>';
}

if ($group=="11")
{
echo '<script type="text/javascript">
jQuery(document).ready(function(){
jQuery('.cat-list-row0:nth-of-type(17)').css('display', 'none');
});
</script>';
}
}