title: Disable select list with knockout
body: <p>I'm trying to disable a select list using knockout disable binding. It doesn't work. The list is still enabled when the value (readOnly.IsNew) is true. I've checked that the value is correct i.e. readOnly.IsNew. It works fine for a checkbox, just not the select list.</p>
  
  <pre><code>&lt;select name="myDropDown" data-bind="
                      options: $parents[1].readOnly.myList,
                      value: selectedMethod,
                      disable: !(readOnly.isNew)"&gt;&lt;/select&gt;
  </code></pre>