title: input focus in jquery mobile, but keyboard doesn't appear
body: <p>I'm using jquery,jquery mobile and phonegap.
  I want to show the keyboard one this page with input type="text".</p>
  
  <pre><code>    &lt;section id="page1" data-role="page"&gt;
          &lt;header data-role="header"&gt;
              &lt;h1&gt;jQuery Mobile&lt;/h1&gt;
          &lt;/header&gt;
          &lt;div data-role="content" class="content"&gt;
  
              &lt;input type="text" placeholder="입력하세요" /&gt;
          &lt;/div&gt;
  
      &lt;/section&gt;
  </code></pre>
  
  <p>and my script is</p>
  
  <pre><code>        $(document).ready(function(){
              $('input').select();
              $('input').focus();
          });
  </code></pre>
  
  <p>The text field is focused but the keyboard is not show, and It is lauched when input type="text" is clicked. How can I force to launch the keyboard in javascript or using phonegap plugin?</p>