What language is used in Google Desktop gadgets?

Question

The language Google Desktop gadgets use resembles JavaScript, but it's different in subtle ways. For example, I saw this line in a gadget:

options(HISTORY_OPTIONS_NAME) = items_.join("|");

which looks like it's assigning to a function call. That's just not OK in JavaScript... what language is this? And what exactly is that line doing?

Answer 1

As far as I know, the gadgets use JavaScript. Where did you get this line from? Are you sure it's not

options[HISTORY_OPTIONS_NAME] = items_.join("|");

(note brackets)