title: How to set initial value and range in easyui-datebox
body: <p>I have a <code>easyui-datebox</code> while accessing it, prompt the date form <code>jan 1970</code>
  how can i make them to show current date initially (ie) is there anything like <code>setInitialDate()</code> also how can i set the date range like <code>setStartDate()</code> and <code>setEndDate()</code></p>