title: jquery getting all dropdown values
body: <p>I have dropdown <code>&lt;select&gt;</code> with id <code>my_dropdown</code>.  I allow multi-select.  I know how to pull the selected value(s) using jquery:</p>
  
  <pre><code>var values = $('#my_dropdown').val();
  </code></pre>
  
  <p>This will return an array of values if I select multiple.  I also need to get all the values in the dropdown regardless of what is selected.  How can I use jquery similarly to get all the values in the dropdown given that id?</p>