Google AJAX Feed API change linking entries

Below code is code generate from

google.load('feeds', '1');

function OnLoad() {
  var feeds = [
      title: 'test',
      url: ''

  var options = {
    stacked : true,
    horizontal : false,
    title : "Testing"

  new GFdynamicFeedControl(feeds, 'content', options);
  document.getElementById('content').style.width = "500px";


According to the documentation, we can change linking entries instead of linking to original source (I don’t want it link back to Google calendar), how can I change the feed link e.g. target to