Ext messageBox hide 小应用

<link rel="stylesheet" type="text/css" href="<%=request.getContextPath() %>/common/js/com.tmd.ui/ext/ext-all.css" />
<SCRIPT LANGUAGE="JavaScript" src="<%=request.getContextPath() %>/common/js/com.tmd.ui/ext/ext-base.js"></SCRIPT>
<SCRIPT LANGUAGE="JavaScript" src="<%=request.getContextPath() %>/common/js/com.tmd.ui/ext/ext.js"></SCRIPT>

function tishi(){
  	Ext.MessageBox.show({
		msg: '订餐中，请稍候...',
		progressText: '订餐中',
		width:300,
		wait:true,
		waitConfig: {interval:100},
		icon:'ext-mb-download',
		animEl: 'sysBtn'
	}).getDialog().setPosition(350,200);
  }
  
   function hide(){
  	Ext.MessageBox.hide();
  }