DOM Level 3 EventTarget requires that all Nodes support even registration: http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration Acid3 uses document.addEventListener which does not work in WebKit.
Better description to actually describe the problem. We don't support HTML eventTypes.
Andrew, can this be closed now?
As of r260290, WebKit's support of EventTarget & DOM Events is nearly perfect: https://wpt.fyi/results/dom.