title: Ext Js open excel file and word file in a ext window or panel?
body: <p>In my Ext js application, I want to view excel &amp; word file in panel, I've tried with <strong>Iframe</strong>, below my code only Download excel in browser but I need to view excel in panel, correct my code if I'm wrong, Thanks in advance.</p>
  
  <pre><code>new Ext.Window({
      title : "Excel",
      width : 400,
      height: 800,
      layout : 'fit',
      items : [{
          xtype : "component",
          autoEl : {
              tag : "iframe",
              src : "Demo.xls"
          }
      }]
  }).show();
  </code></pre>