Found in
http://java.sun.com/j2se/1.5.0/docs/api/org/w3c/dom/events/EventTarget.html
http://java.sun.com/j2se/1.5.0/docs/api/org/w3c/dom/events/MouseEvent.html
http://java.sun.com/j2se/1.5.0/docs/api/org/w3c/dom/events/MutationEvent.html

The parameter names don't have space followed so the generated document looks like,

    Parameters:
        typeArgSpecifies - the event type.
        canBubbleArgSpecifies - whether or not the event can bubble.
        cancelableArgSpecifies - whether or not the event's default action can be prevented.
        viewArgSpecifies - the Event's AbstractView.
        detailArgSpecifies - the Event's mouse click count.
        screenXArgSpecifies - the Event's screen x coordinate
        screenYArgSpecifies - the Event's screen y coordinate
        clientXArgSpecifies - the Event's client x coordinate
        clientYArgSpecifies - the Event's client y coordinate
        ctrlKeyArgSpecifies - whether or not control key was depressed during the Event.
        altKeyArgSpecifies - whether or not alt key was depressed during the Event.
        shiftKeyArgSpecifies - whether or not shift key was depressed during the Event.
        metaKeyArgSpecifies - whether or not meta key was depressed during the Event.
        buttonArgSpecifies - the Event's mouse button.
        relatedTargetArgSpecifies - the Event's related EventTarget.
###@###.### 11/2/04 01:43 GMT
I've reported this bug to the W3C; there's nothing we can do to until they fix it.
These bugs seems to be fixed in JAXP 1.4, though I can't find a record of when. Please close this if you can't reproduce it.