I downloaded WebStorm after reading about it, and found some good things. But it didn't recognize that I'm using YUI, and it didn't have the PHP support I need. So I'll download and buy PHPStorm shortly, providing the YUI issue is resolved.
I'm loading YUI from the Yahoo CDN. This means that it's nowehere in the project, and never will be. Is there a way to make this work anyway, so that I can get code completion and such?