function mrbSectionInit(ctx){
  $('#latest-builds').on('click', '.cancel-build-btn', function(e){
    e.stopImmediatePropagation();
    e.preventDefault();

    var url = $(this).data('request-url');
    var buildReqIds = $(this).data('buildrequest-id');

    libtoaster.cancelABuild(url, buildReqIds, function () {
      window.location.reload();
    }, null);
  });

  $('#latest-builds').on('click', '.rebuild-btn', function(e){
    e.stopImmediatePropagation();
    e.preventDefault();

    var url = $(this).data('request-url');
    var target = $(this).data('target');

    libtoaster.startABuild(url, target, function(){
      window.location.reload();
    }, null);
  });

  // cached version of buildData, so we can determine whether a build has
  // changed since it was last fetched, and update the DOM appropriately
  var buildData = {};

  // returns the cached version of this build, or {} is there isn't a cached one
  function getCached(build) {
    return buildData[build.id] || {};
  }

  // returns true if a build's state changed to "Succeeded" or "Failed"
  // from some other value
  function buildFinished(build) {
    var cached = getCached(build);
    return cached.state &&
      cached.state !== build.state &&
      (build.state == 'Succeeded' || build.state == 'Failed' ||
       build.state == 'Cancelled');
  }

  // returns true if the state changed
  function stateChanged(build) {
    var cached = getCached(build);
    return (cached.state !== build.state);
  }

  // returns true if the complete_percentage changed
  function progressChanged(build) {
    var cached = getCached(build);
    return (cached.tasks_complete_percentage !== build.tasks_complete_percentage);
  }

  function refreshMostRecentBuilds(){
    libtoaster.getMostRecentBuilds(
      libtoaster.ctx.mostRecentBuildsUrl,

      // success callback
      function (data) {
        var build;
        var tmpl;
        var container;
        var selector;
        var colourClass;
        var elements;

        // classes on the parent which signify the build state and affect
        // the colour of the container for the build
        var buildStateClasses = 'alert-info alert-success alert-danger';

        for (var i = 0; i < data.length; i++) {
          build = data[i];

          if (buildFinished(build)) {
            // a build finished: reload the whole page so that the build
            // shows up in the builds table
            window.location.reload();
          }
          else if (stateChanged(build)) {
            // update the whole template
            tmpl = $.templates("#build-template");

            html = tmpl.render(build);

            selector = '[data-latest-build-result="' + build.id + '"] ' +
              '[data-role="build-status-container"]';
            container = $(selector);

            container.html(html);

            // style the outermost container for this build to reflect
            // the new build state (red, green, blue);
            // NB class set here should be in buildStateClasses
            colourClass = 'alert-info';
            if (build.state == 'Succeeded') {
              colourClass = 'alert-success';
            }
            else if (build.state == 'Failed') {
              colourClass = 'alert-danger';
            }

            elements = $('[data-latest-build-result="' + build.id + '"]');
            elements.removeClass(buildStateClasses);
            elements.addClass(colourClass);
          }
          else if (progressChanged(build)) {
            // update the progress text
            selector = '#build-pc-done-' + build.id;
            $(selector).html(build.tasks_complete_percentage);

            // update the progress bar
            selector = '#build-pc-done-bar-' + build.id;
            $(selector).width(build.tasks_complete_percentage + '%');
          }

          buildData[build.id] = build;
        }
      },

      // fail callback
      function (data) {
        console.error(data);
      }
    );
  }

  window.setInterval(refreshMostRecentBuilds, 1000);
  refreshMostRecentBuilds();
}