ExtJS CSV Exporter + Downloadify to make IE workable

 Downloadify.create('exportButton', {
  onComplete: function(){
    alert('Your spreadsheet has been saved.');
  },
  onCancel: function(){
    alert('You have cancelled the saving of this file.');
  },
  onError: function(){
    alert('You must put something in the File Contents or there will be nothing to save!');
  },
filename: 'export.xls',
data: Ext.ux.Exporter[config.exportFunction](this.component, null, config),
swf: '/extjs/Downloadify/media/downloadify.swf',
  downloadImage: '/extjs/Downloadify/images/download.png',
  dataType: 'base64',
  width: 100,
  height: 30,
  transparent: true,
  append: true
});