public short getAttrChange()
attrChange indicates the type of change which triggered
the DOMAttrModified event. The values can be MODIFICATION
, ADDITION, or REMOVAL.

 public String getAttrName()
attrName indicates the name of the changed
Attr node in a DOMAttrModified event.

 public String getNewValue()
newValue indicates the new value of the Attr
node in DOMAttrModified events, and of the CharacterData
node in DOMCharacterDataModified events.

 public String getPrevValue()
prevValue indicates the previous value of the
Attr node in DOMAttrModified events, and of the
CharacterData node in DOMCharacterDataModified events.

 public Node getRelatedNode()
relatedNode is used to identify a secondary node related
to a mutation event. For example, if a mutation event is dispatched
to a node indicating that its parent has changed, the
relatedNode is the changed parent. If an event is
instead dispatched to a subtree indicating a node was changed within
it, the relatedNode is the changed node. In the case of
the DOMAttrModified event it indicates the Attr node
which was modified, added, or removed.

 public  void initMutationEvent(String typeArg,
    boolean canBubbleArg,
    boolean cancelableArg,
    Node relatedNodeArg,
    String prevValueArg,
    String newValueArg,
    String attrNameArg,
    short attrChangeArg)
The initMutationEvent method is used to initialize the
value of a MutationEvent created through the
DocumentEvent interface. This method may only be called
before the MutationEvent has been dispatched via the
dispatchEvent method, though it may be called multiple
times during that phase if necessary. If called multiple times, the
final invocation takes precedence.