up and down arrow is not working for list item. onkey input search
<p>/* up and down arrow is not working for list item. on key input search */  </p>

<pre><code> &lt;html&gt;
    &lt;head&gt;
    &lt;/head&gt;
    &lt;body&gt;


             &lt;input type="text" id="input1" value="" /&gt;
</code></pre>

<p>/* up and down arrow is not working for list item. on key input search */  </p>

<pre><code>                    &lt;ul id="testing"&gt;
</code></pre>

<p>/* up and down arrow is not working for list item. on key input search */  </p>

<pre><code>                    &lt;li tabindex="0"&gt; testing test&lt;/li&gt;

                    &lt;li tabindex="1"&gt; testing&lt;/li&gt;

                    &lt;li tabindex="2"&gt; testing&lt;/li&gt;

                    &lt;li tabindex="3"&gt; testing&lt;/li&gt;

                    &lt;/ul&gt;



    &lt;/body&gt;
    &lt;/html&gt;
</code></pre>
