title: Overriding Jquery version
body: <p>I am modifying a website that needs to have a datepicker with yyyy-mm-dd as format.</p>
  
  <p>I am trying JQUERY UI datepicker but the catch is. My site is using</p>
  
  <pre><code>jquery-1.2.6.min.js
  </code></pre>
  
  <p>and when I paste:</p>
  
  <pre><code>&lt;link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.16/themes/base/jquery-ui.css" type="text/css" media="all"&gt;
  &lt;script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"&gt;&lt;/script&gt;
  &lt;script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.11/jquery-ui.min.js"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>as the requisite of date picker from the examples I browsed.</p>
  
  <p>Some of my functions are not working all of a sudden.</p>
  
  <p>Can I somehow use jquery UI without harming the already working website? My task is only to add a datepicker.</p>
  
  <p>Thanks.</p>