gistfile1.js

    Y.on("domready", function(ev) {
    
        //
        // submit batch order
        //
        Y.on('click', function(ev) {
        
            var cfg = { 
                method: 'POST',
                form: { upload: true, id: 'batchForm' },
                on: { complete: onComplete }
            };
            
            Y.io( url, cfg );
            
        }, '#submitOrderBtn');
        
        //
        // Private helper functions
        //
        function onComplete(id, r) { alert('never get here!'); }
    }

gistfile2.htm

<form id="batchForm">
  <table>
    <tr>
      <td>

        Enter batch name
      </td>
      <td>
        <input id="Name" name="Name" type="text" value="" />
      </td>
    </tr>
    <tr>
      <td>
        Enter file to upload:
      </td>

      <td>
        <input type="file" name="BatchFile" />
      </td>
    </tr>
    <tr>
      <td>
      
      </td>
      <td>
      
      </td>

    </tr>
  </table>
  <input id="submitOrderBtn" type="button" value="Submit Order" />
</form>