title: Select control with multiple="false' allows multiple selections
body: <p>So far I've tested in Chrome and Firefox. </p>
  
  <p>I have a control set up like this:</p>
  
  <pre><code>&lt;select id="MvcDynamicField_7c5d48c48a9d44d2a89c7ec87ac91b9d" multiple="False" name="MvcDynamicField_7c5d48c48a9d44d2a89c7ec87ac91b9d" size="4"&gt;
    &lt;option value="2204768b-0741-e511-b962-00215e466552"&gt;Nerd&lt;/option&gt;
    &lt;option selected="selected" value="2304768b-0741-e511-b962-00215e466552"&gt;Geek&lt;/option&gt;
    &lt;option selected="selected" value="2404768b-0741-e511-b962-00215e466552"&gt;Jock&lt;/option&gt;
    &lt;option selected="selected" value="2504768b-0741-e511-b962-00215e466552"&gt;Crafter&lt;/option&gt;
    &lt;option value="2604768b-0741-e511-b962-00215e466552"&gt;Wallflower&lt;/option&gt;
    &lt;option value="bf60c742-dc41-e511-b962-00215e466552"&gt;Bossy&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>I can select more than one item on the page tho. Why?</p>