» Javascript: Event.stop()
unfortunately i found this functionality later than i needed it. In an effort to try to re-implement a google mail like To: Picker for an Adress Box consisting of an Textarea, i would have needed this functionality.
The problem was: whenever the user pressed enter, he would select the picked adress, but the enter keycode would go through the javascript event handler and
result in a newline inside the textarea. If i had known about Event.stop(event) beforehand. But well, now i know it :)