// Loader plugin for loading CSS. Does not guarantee loading via onload
// watching, just inserts link tag.
define({
  load: function(id, require, onload, config) {
    if (config.isBuild) {
      return onload();
    }

    var link = document.createElement('link');
    link.type = 'text/css';
    link.rel = 'stylesheet';
    link.href = require.toUrl(id + '.css');
    link.addEventListener('load', onload, false);
    document.head.appendChild(link);
  }
});