I've have a menu structure that has a depth of 3 levels on a drupal 6 CMS.

When I click on a level 1 that has children, the level 2 menu items display fine. If the level 2 has children, it is not showing the level 3.

If I check the expanded box the level 3 is displayed however, it displays all the time irrespective of the level 2 that has been selected. It seems to display whenever it's parent level 1 is selected.

For further information, the menu items are a mixture of custom links & content links. i.e. Links I've enetered manually when creating the menu and others generated by when creating a node or view display.

All I want is to show the children if there are any for the selected parent.

Am I missing something fundamental here?

Thanks Steve