title: JQM: multiple select option selection on change event
body: <p>I have a (multiple) select in my JQM page.</p>
  
  <p>I need to force option with value 'A' de-selection on any other option selection.</p>
  
  <p>HTML is like this:</p>
  
  <pre><code>&lt;select name="select-1" id="select-1" multiple="multiple" data-native-menu="false" /&gt;
     &lt;option value='A'&gt;a&lt;/option&gt;
     &lt;option value='B'&gt;b&lt;/option&gt;
     &lt;option value='C'&gt;c&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>I'm using some code like this, with no success... :-(</p>
  
  <pre><code>$("select#select-1").change(function() {
      $("select#select-1").val('A').attr("selected", false).trigger("refresh");
  });
  </code></pre>
  
  <p>It looks like the option I'm trying to de-select is selected, and all others are de-selected (excluded the current one) ... :-(</p>
  
  <p>A jsfiddle is <a href="http://jsfiddle.net/marcolino/P6XwK/" rel="nofollow">here</a>.</p>