JavaScript and Eclipse

Anybody out there using Eclipse to work with JavaScript?

I like the outline feature of Eclipse. It keeps me from having to hunt around for functions I'm interested in. However, when I make a variable or function that's bound to "this", I don't get it in the outline. In the image above, I don't understand why this.variable and this.another_function don't show up in the outline.

Why is that? Any of you know how to make it show in the outline?