title: Disabling/enabling requiredFieldValidators with javascript and server side
body: <p>I have a drop down (dropdown2) that is required <strong>IF</strong> there is something in it but it's options data is driven by ajax from another dropdown (dropdown1) selection.  Sometimes dropdown2 will be empty and in that case I can't require it.  So I can disable the <code>requiredFieldValidators</code> in javascript by calling this...</p>
  
  <pre><code>ValidatorEnable(document.getElementById(validatorId), false);
  </code></pre>
  
  <p>This works fine but the server still fires the <code>requiredFieldValidator</code> logic.  Is anyone aware of how I can force the server to not validate if the validator is set to false client side?  </p>