Hi all,
I'm sure I've seen people in the past asking how to have section headings in the auto-nav that just open up for pages below but that do not have any content.

I was just looking at this for a site and thought I'd share my solution - if there is a better/easier/default way of doing this that I've missed then please don't hesitate to slap me round the head, call me a silly boy and post it below!

Basically we want the href of a menu item to be "javascript:void(0)", but we also want to show the section in the url path.

In the Concrete5 admin area go to Pages and Themes/Attributes
and add a new page attribute of type checkbox with the handle 'placeholder'.

Copy concrete/blocks/autonav/view.php
to /blocks/autonav/view.php

edit /blocks/view.php (so as not to change the core code).

Find the following code:

if (!$pageLink) {
$pageLink = $ni->getURL();
}
and add this after it

if ($_c->getCollectionAttributeValue('placeholder')) {
$pageLink="javascript:void(0)";
}
this little snippet of code checks to see if your custom attribute is active and if it is adds the javascript.

All you need to do then is apply the custom attribute to your pages.

Like I said - there may be another way of doing this but this way doesn't mess up the path and allows page permissions to cascade nornmally.