Moss Sub sites navigation elements

My site structure looks like this:

- top-level site
--sub-site
---page
---page
--sub-site
---page

I want to disable the link on the tab of each sub-site that currently links to default.aspx so that it acts as a heading to the pages only and not a url that can be clicked. When users navigate over the sub-site tab, the pages drop down menu displays.

Would I need to code this?

From stackoverflow

• Coding it would make it easier as it would give you more control over the html. It is not a massive job to create a custom navigation provider and include it in your masterpage/page layouts.

  This is a reasonable introduction to your options.

  I personally have found the code released here by the SharePoint team to have been very useful.