source: sipei/modules/pathauto/pathauto.js

// $Id: pathauto.js,v 1.4.2.2 2010/02/10 21:50:30 greggles Exp $
if (Drupal.jsEnabled) {
  $(document).ready(function() {
    if ($("#edit-pathauto-perform-alias").size() && $("#edit-pathauto-perform-alias").attr("checked")) {
      // Disable input and hide its description.
      $("#edit-path").attr("disabled","disabled");
      $("#edit-path-wrapper > div.description").hide(0);
    }
    $("#edit-pathauto-perform-alias").bind("click", function() {
      if ($("#edit-pathauto-perform-alias").attr("checked")) {
        // Auto-alias checked; disable input.
        $("#edit-path").attr("disabled","disabled");
        $("#edit-path-wrapper > div[class=description]").slideUp('fast');
      }
      else {
        // Auto-alias unchecked; enable input.
        $("#edit-path").removeAttr("disabled");
        $("#edit-path")[0].focus();
        $("#edit-path-wrapper > div[class=description]").slideDown('fast');
      }
    });
  });

  Drupal.verticalTabs = Drupal.verticalTabs || {};

  Drupal.verticalTabs.path = function() {
    var path = $('#edit-path').val();
    var automatic = $('#edit-pathauto-perform-alias').attr('checked');

    if (automatic) {
      return Drupal.t('Automatic alias');
    }
    if (path) {
      return Drupal.t('Alias: @alias', { '@alias': path });
    }
    else {
      return Drupal.t('No alias');
    }
  }
}