title: specifying custom properties to a displaytag table decorator
body: <p>I have a decorator specified on a displaytag table that I need to pass parameters to. The decorator adds an id attribute to the row. Currently the values I require are hardcoded.</p>
  
  <p>The parameters I need are:</p>
  
  <ul>
  <li>The name of the property to use as id value</li>
  <li>An id prefix (usually the property used is a number and IE doesn't like ids starting with numbers)</li>
  </ul>
  
  <p>Looking through the javadocs for displaytag, it looks like I can set a property (<code>&lt;displaytag:setProperty&gt;</code>), but there doesn't seem to be a way for me to return a general property.</p>