title: Adjust width of Ext.Msg in Sencha touch
body: <p>I am trying to develop a mobile app using Sencha touch .I need to show a custom message box with 4 buttons.But i cannot change the with of message box,because of that only 3 buttons are visible in the message.please anyone help me to adjust the width of Message Box.Following is the code i am using </p>
  
  <p>Ext.Msg.show({
           title : '',
           msg : '',
           width : 300,
           height : 300,</p>
  
  <pre><code>     buttons : [{
       itemId : 'A',
       text : 'A',
       ui : 'action',
       }, {
       itemId : 'B',
       text : 'B',
       ui : 'action'
       }, {
       itemId : 'C',
       text : 'C',
       ui : 'action'
       }, {
       itemId : 'D',
       text : 'D',
       ui : 'action'
       }, {
       itemId : 'E',
       text : 'E',
       ui : 'action'
       }, {
       itemId : 'F',
       text : 'F',
       ui : 'action'
       }]
       });
  </code></pre>
  
  <p>Thanks in advance  .....</p>