title: Why doesn't jQuery form validation plugin work in my page?
body: <p>Why does not jQuery form validation plug-in work?
  This is the code:</p>
  
  <pre><code>&lt;form id="form2" action="comment.php?id=5" method="post"&gt;
      &lt;div&gt;Input your own comment:&lt;/div&gt;
  &lt;textarea id="textarea2" name="textarea2" rows="3" cols="29"&gt;&lt;/textarea&gt;&lt;br/&gt;
  &lt;input type="submit" value="Submit"&gt;&lt;/form&gt;&lt;/div&gt;
  &lt;script type="text/javascript" src="http://dev.jquery.com/view/trunk/plugins/validate/jquery.validate.js"&gt;&lt;/script&gt;
  &lt;script&gt;
  $(document).ready(function(){ 
      $("#form2").validate(
      { 
          rules: { 
           textarea2: {
              required: true,
               minlength:30
  
          }
          }, 
            messages: { 
  
  
          }); 
   }); 
  &lt;/script&gt;
  </code></pre>
  
  <p>And </p>
  
  <pre><code> &lt;script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>exists in the header of this page.</p>
  
  <p>The jQuery plugin doesn't work. What's wrong?</p>