title: jquery validation rules dependency
body: <p>Using this example from Validation Plug-in's 'required (dependency-expression)' explanation:</p>
  
  <pre><code>$("#myform").validate({
    rules: {
      details: {
        required: "#other:checked"
      }
    }, debug:true
  });
  $("#other").click(function() {
      $("#details").valid();
  });
  </code></pre>
  
  <p>I'm trying to make the text input required if radio button #guide is selected in example below:</p>
  
  <pre><code>&lt;input type="radio" id="outfitter" name="memtype" value="Outfitter" /&gt;Outfitter $125
  &lt;input type="radio" id="guide" name="memtype" value="Guide" /&gt;Guide $75
  &lt;input type="text" id="sponout" name="sponout" size="75" /&gt;
  </code></pre>
  
  <p>I just don't know where to place </p>
  
  <pre><code> $("#other").click(function() {
      $("#details").valid();
   });
  </code></pre>
  
  <p>within rules validation coding.</p>