title: Yii CActiveForm CheckBox not displayed correctly
body: <p>I'm new using Yii framework. I show a list a checkbox. But it's not displayed correctly. 
  Here is what I want: <a href="http://imageshack.us/photo/my-images/703/checkboxgood.png" rel="nofollow">http://imageshack.us/photo/my-images/703/checkboxgood.png</a></p>
  
  <p>But, here is what I get: <a href="http://imageshack.us/photo/my-images/715/checkbox.png" rel="nofollow">http://imageshack.us/photo/my-images/715/checkbox.png</a></p>
  
  <p>Anyway, here is code I used to generate this view:</p>
  
  <pre><code>  &lt;div class="row"&gt;
          &lt;?php echo $form-&gt;labelEx($model,'kat3'); ?&gt;
          &lt;?php echo $form-&gt;checkBox($model,'kat3'); ?&gt;
      ?php echo $form-&gt;error($model,'kat3'); ?&gt;
      &lt;/div&gt;
  
      &lt;div class="row"&gt;
          &lt;?php echo $form-&gt;labelEx($model,'kat4'); ?&gt;
          &lt;?php echo $form-&gt;checkBox($model,'kat4'); ?&gt;
          &lt;?php echo $form-&gt;error($model,'kat4'); ?&gt;
      &lt;/div&gt;
  </code></pre>
  
  <p>I am new to web developing, and understand CSS a bit. 
  Anyone have a suggestion?
  thanks! :)</p>