Colorbox: Show/simulate 'loading' animation for iframe content?

Question

How can I show or simulate (using a fixed timespan) a loading animation for iframe content which is displayed using Colorbox?

What I'd like to achieve is actually a temporary overlay over the iframe content, which disappears when the iframe-content is loaded. Is this somewhat possible?

Answer 1

There is LoadMask plugin that can display an overlay. You will need to control when to show it and when to hide it manually though.