Making some links generated from the wp_nav-menu function unclickeable?

In this website:

http://alexchen.info/brianfunshine/

I have a navigation menu taken from the twentyten theme. I want to make some links clickeable and some not (some don’t have to behave like a link). I have accomplished this with some CSS but it doesn’t work in all browsers.

The links are dinamically generated with:

wp_nav_menu

Any suggestions?

Create a custom menu item in the admin panel with a dummy URL, foo.com or whatever. Add it to the menu, then delete the target URL and save. The menu item will be rendered without an href attribute and will be unclickable.