importance: 5 --- # Catch links in the element Make all links inside the element with `id="contents"` ask the user if they really want to leave. And if they don't then don't follow. Like this: [iframe height=100 border=1 src="solution"] Details: - HTML inside the element may be loaded or regenerated dynamically at any time, so we can't find all links and put handlers on them. Use the event delegation. - The content may have nested tags. Inside links too, like `...`.