HTML element IDs for captivate objects

I"m ok with JavaScript and I want to extend Captivate with some custom code I'm writing.

The problem I'm having at the moment is that I don't know what the object in Captivate will be when it's published to HTML.

For example, I made a simple 1 slide project with background audio and in the published HTML5 output I couldn't find the audio but the audio played correctly. My guess is that the audio was added to a Canvas element.

How can I reference the audio, or any other object, in the HTML when I can't even find it?

Is there a list somewhere which says "this Captivate object becomes this element in the HTML"?