ins(visited, ns)) {
    errors.push(ns);
  }
});
if (errors.length > 0) {
  alert('The following files were not added to dependency graph: \n' +
        errors.join('\n'));
}

document.write('<table><tr>')
goog.array.forEach(levels, function(level) {
  document.write('<td>');
  goog.array.forEach(level, function(ns) {
    document.write(
        goog.getMsg('<div id="{$ns}" class="dep">{$ns}</div>', {ns:ns}));
  });
});
document.write('</tr></table>')


var currentTarget = null;
var hilited = [];
var requir