scroller issues on andorid when keyborad hide

[Ken]

my code :

<div data-role='view'>
    <header>
.....
</header>
    <div data-role='content'>
        <ul>
           .<li></li>....
            <li>
                <input type='text' />
            </li>
            .<li></li>....
        </ul>
    </div>
</div>

issue:   scroll to the bottom touch the input , the keyboard show, and the content will scroll up , but it can not scroll to back when keyboard hide. 

  config:     android:windowSoftInputMode="stateAlwaysHidden" 

[Ken]

can some one help me?