title: Putting DOM queries in variable in J-Query Mobile works partially, changing the prop value doesn't work
body: <p>Library used.</p>
  
  <p>knockout-2.2.0.js</p>
  
  <p>jquery.mobile-1.2.0.min.js</p>
  
  <p>I tried to put these DOM queries in a variable and used it.</p>
  
  <p>Like this :</p>
  
  <pre><code>var $merchantCustomSelectVar = $('#idMerchantCustomSelect');
  $merchantCustomSelectVar.live("change", function (event)
  $merchantCustomSelectVar.prop('selectedIndex', self.lastSelected);
  </code></pre>
  
  <p>I observed as follows :</p>
  
  <p>1# When I am binding to some event like "2-->" above it works good.</p>
  
  <p>2# When I try to mutate some prop like "3-->" above  it doesn't works here though it works for the web applications. </p>
  
  <p>Currently I am using jquery.mobile-1.2.0.min.js
  I also tried with jquery.mobile-1.3.2.min.js and jquery.mobile-1.3.2.min.js but that didn't make any difference.</p>
  
  <p>I tried these version of js as  while I was testing on JSFiddle there is was working good for "prop" manipulation, but the same don't work in the application. </p>
  
  <p>jsfiddle.net/CWvwn/2101/</p>
  
  <p>Please help.
  Thanks.</p>