- minor html formatting improvements in examples
- started unit test suite
- fixed such that if attribute is added, for then removed in same request
  then nothing is returned
- made it possible for 'onerror' javascript handler to return true to
  allow for chained requests to continue executing
- change attribute value for "ElementType" such that it has "Tag" as value,
  allowing for changes to occurr on the client when element tagName is
  changed