I'm converting some of these to be jquery, to use addClass, removeClass, on, and html.

I am hesitant to change all of them for the sake of using jquery, but, I can. I don't want to get into places where iframe.src = source; turns into iframe.attr( "src", source); and things like closeButton.userSelect. Also, did not find an obvious way to use .style.something.

I'll push up what I have and we can iterate on the jquery.

Also, not sure what you want with prefixing. You saying I should cache the ".tutorial-" in a tutorial variable and then later do tutorial + "view-title" etc?