I have been wondering how can I do something like for a while now but no luck so far.

Take a look at: http://www.planetdiaz.com/test/

Now on the navigation menus, notice that there is a little arrow on the following texts: Programming, Web Discussions, and Hardware & Software

However, this arrow is on top of the text and I would like it to be just at the left of the text, so it looks something like this: