[Commentor] LC-396 Charles McCathieNevile on behalf of Opera Software [Comment] BP Not covered: 3. Use Device-independent event triggers in HTML, the onmouse* and onkey* triggers are somewhat difficult to trigger from the range of devices available. onclick is generally implemented in such a way that any device can trigger it, and mutation events (form changes, page load, etc) do not rely on a particular user interface anyway. [Commentor reply] no reply from commenter [Working Group decision] 
We have added the following sentence in the "how to do it" section: If scripting is used, do not use onmouse and onkey triggers, use onclick.