r to
   calling the validate, unmarshal, or marshal methods, then a default event 
   handler will receive notification of any errors or warnings encountered.  
   The default event handler will cause the current operation to halt after 
   encountering the first error or fatal error (but will attempt to continue 
   after receiving warnings).
 </blockquote>

 <p>
 <a id="handlingevents"></a>
 <b>Handling Validation Events</b><br>
 <blockquote>
   There are three ways to handle events encountered during the