inilne event registration vs. advanced registration for image validation
<p>Inline Event Registration works correctly if I use code similar to</p>

<pre><code>onerror=function(this) // in xhtml placed in element
</code></pre>

<p>However advanced event registration does not work, i.e.</p>

<pre><code>a.onerror=function(this) // where a. is the element in javascript
</code></pre>

<p>when I want to correctly update this.src to a new image on fail.  </p>
