// Copyright 2007, Google Inc.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are met:
  //
  //  1. Redistributions of source code must retain the above copyright notice,
  //     this list of conditions and the following disclaimer.
  //  2. Redistributions in binary form must reproduce the above copyright notice,
  //     this list of conditions and the following disclaimer in the documentation
  //     and/or other materials provided with the distribution.
  //  3. Neither the name of Google Inc. nor the names of its contributors may be
  //     used to endorse or promote products derived from this software without
  //     specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
  // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  // Sets up google.gears.*, which is *the only* supported way to access Gears.
  //
  // Circumvent this file at your own risk!
  //
  // In the future, Gears may automatically define google.gears.* without this
  // file. Gears may use these objects to transparently fix bugs and compatibility
  // issues. Applications that use the code below will continue to work seamlessly
  // when that happens.
  
  (function() {
    // We are already defined. Hooray!
    if (window.google && google.gears) {
      return;
    }
  
    var factory = null;
  
    // Firefox
    if (typeof GearsFactory != 'undefined') {
      factory = new GearsFactory();
    } else {
      // IE
      try {
        factory = new ActiveXObject('Gears.Factory');
        // privateSetGlobalObject is only required and supported on WinCE.
        if (factory.getBuildInfo().indexOf('ie_mobile') != -1) {
          factory.privateSetGlobalObject(this);
        }
      } catch (e) {
        // Safari
        if ((typeof navigator.mimeTypes != 'undefined')
             && navigator.mimeTypes["application/x-googlegears"]) {
          factory = document.createElement("object");
          factory.style.display = "none";
          factory.width = 0;
          factory.height = 0;
          factory.type = "application/x-googlegears";
          document.documentElement.appendChild(factory);
        }
      }
    }
  
    // *Do not* define any objects if Gears is not installed. This mimics the
    // behavior of Gears defining the objects in the future.
    if (!factory) {
      return;
    }
  
    // Now set up the objects, being careful not to overwrite anything.
    //
    // Note: In Internet Explorer for Windows Mobile, you can't add properties to
    // the window object. However, global objects are automatically added as
    // properties of the window object in all browsers.
    if (!window.google) {
      google = {};
    }
  
    if (!google.gears) {
      google.gears = {factory: factory};
    }
  })();