UnlitAlpha shader script not working

Oi guys. I'm trying to add some transparent areas to my GUI using this script here: http://www.unifycommunity.com/wiki/index.php?title=UnlitAlpha

But after pasting it into a new script and saving, I get a ton of BCE0044 errors that want to make me completely mangle it, including putting semicolons everywhere and getting rid of all of the commas. I'm using Java, so is this not in Java, or what?

Help is appreciated, of course.

It's not a script, it's a shader. You don't paste it into a script, you paste it into a shader. (BTW, you aren't using Java; Unity has no support for that language at all. You're using Javascript, or at least what's called Javascript in Unity.)