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diff --git a/zend/demos/Zend/Gdata/YouTubeVideoBrowser/video_browser.js b/zend/demos/Zend/Gdata/YouTubeVideoBrowser/video_browser.js
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+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Gdata
+ * @subpackage Demos
+ * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+
+/**
+ * @fileoverview Provides functions for browsing and searching YouTube 
+ * data API feeds using a PHP backend powered by the Zend_Gdata component
+ * of the Zend Framework.
+ */
+
+/**
+ * provides namespacing for the YouTube Video Browser PHP version (ytvbp)
+ */
+var ytvbp = {};
+
+/**
+ * maximum number of results to return for list of videos
+ * @type Number
+ */
+ytvbp.MAX_RESULTS_LIST = 5;
+
+/**
+ * navigation button id used to page to the previous page of
+ * results in the list of videos
+ * @type String
+ */
+ytvbp.PREVIOUS_PAGE_BUTTON = 'previousPageButton';
+
+/**
+ * navigation button id used to page to the next page of
+ * results in the list of videos
+ * @type String
+ */
+ytvbp.NEXT_PAGE_BUTTON = 'nextPageButton';
+
+/**
+ * container div id used to hold list of videos
+ * @type String
+ */
+ytvbp.VIDEO_LIST_CONTAINER_DIV = 'searchResultsVideoList';
+
+/**
+ * container div id used to hold the video player
+ * @type String
+ */
+ytvbp.VIDEO_PLAYER_DIV = 'videoPlayer';
+
+/**
+ * container div id used to hold the search box which displays when the page
+ * first loads
+ * @type String
+ */
+ytvbp.MAIN_SEARCH_CONTAINER_DIV = 'mainSearchBox';
+
+/** 
+ * container div id used to hold the search box displayed at the top of
+ * the browser after one search has already been performed
+ * @type String
+ */
+ytvbp.TOP_SEARCH_CONTAINER_DIV = 'searchBox';
+
+/**
+ * the page number to use for the next page navigation button
+ * @type Number
+ */
+ytvbp.nextPage = 2;
+
+/**
+ * the page number to use for the previous page navigation button
+ * @type Number
+ */
+ytvbp.previousPage = 0;
+
+/** 
+ * the last search term used to query - allows for the navigation
+ * buttons to know what string query to perform when clicked
+ * @type String
+ */
+ytvbp.previousSearchTerm = '';
+
+/**
+ * the last query type used for querying - allows for the navigation
+ * buttons to know what type of query to perform when clicked
+ * @type String
+ */
+ytvbp.previousQueryType = 'all';
+
+/**
+ * Retrieves a list of videos matching the provided criteria.  The list of
+ * videos can be restricted to a particular standard feed or search criteria.
+ * @param {String} queryType The type of query to be done - either 'all'
+ *     for querying all videos, or the name of a standard feed.
+ * @param {String} searchTerm The search term(s) to use for querying as the
+ *     'vq' query parameter value
+ * @param {Number} page The 1-based page of results to return.
+ */
+ytvbp.listVideos = function(queryType, searchTerm, page) {
+  ytvbp.previousSearchTerm = searchTerm; 
+  ytvbp.previousQueryType = queryType; 
+  var maxResults = ytvbp.MAX_RESULTS_LIST;
+  var startIndex =  (((page - 1) * ytvbp.MAX_RESULTS_LIST) + 1);
+  ytvbp.presentFeed(queryType, maxResults, startIndex, searchTerm);
+  ytvbp.updateNavigation(page);
+};
+
+/**
+ * Sends an AJAX request to the server to retrieve a list of videos or
+ * the video player/metadata.  Sends the request to the specified filePath
+ * on the same host, passing the specified params, and filling the specified
+ * resultDivName with the resutls upon success.
+ * @param {String} filePath The path to which the request should be sent
+ * @param {String} params The URL encoded POST params
+ * @param {String} resultDivName The name of the DIV used to hold the results
+ */
+ytvbp.sendRequest = function(filePath, params, resultDivName) {
+  if (window.XMLHttpRequest) {
+    var xmlhr = new XMLHttpRequest();
+  } else {
+    var xmlhr = new ActiveXObject('MSXML2.XMLHTTP.3.0');
+  }
+        
+  xmlhr.open('POST', filePath, true);
+  xmlhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); 
+
+  xmlhr.onreadystatechange = function() {
+    var resultDiv = document.getElementById(resultDivName);
+    if (xmlhr.readyState == 1) {
+      resultDiv.innerHTML = '<b>Loading...</b>'; 
+    } else if (xmlhr.readyState == 4 && xmlhr.status == 200) {
+      if (xmlhr.responseText) {
+        resultDiv.innerHTML = xmlhr.responseText;
+      }
+    } else if (xmlhr.readyState == 4) {
+      alert('Invalid response received - Status: ' + xmlhr.status);
+    }
+  }
+  xmlhr.send(params);
+}
+
+/**
+ * Uses ytvbp.sendRequest to display a YT video player and metadata for the
+ * specified video ID.
+ * @param {String} videoId The ID of the YouTube video to show
+ */
+ytvbp.presentVideo = function(videoId) {
+  var params = 'queryType=show_video&videoId=' + videoId;
+  var filePath = 'index.php';
+  ytvbp.sendRequest(filePath, params, ytvbp.VIDEO_PLAYER_DIV);
+}
+
+/**
+ * Uses ytvbp.sendRequest to display a list of of YT videos.
+ * @param {String} queryType The name of a standard video feed or 'all'
+ * @param {Number} maxResults The maximum number of videos to list
+ * @param {Number} startIndex The first video to include in the list
+ * @param {String} searchTerm The search terms to pass to the specified feed
+ */
+ytvbp.presentFeed = function(queryType, maxResults, startIndex, searchTerm){
+  var params = 'queryType=' + queryType + 
+               '&maxResults=' + maxResults +
+               '&startIndex=' + startIndex + 
+               '&searchTerm=' + searchTerm;
+  var filePath = 'index.php';
+  ytvbp.sendRequest(filePath, params, ytvbp.VIDEO_LIST_CONTAINER_DIV);
+}
+
+/**
+ * Updates the variables used by the navigation buttons and the 'enabled' 
+ * status of the buttons based upon the current page number passed in.
+ * @param {Number} page The current page number
+ */
+ytvbp.updateNavigation = function(page) {
+  ytvbp.nextPage = page + 1;
+  ytvbp.previousPage = page - 1;
+  document.getElementById(ytvbp.NEXT_PAGE_BUTTON).style.display = 'inline';
+  document.getElementById(ytvbp.PREVIOUS_PAGE_BUTTON).style.display = 'inline';
+  if (ytvbp.previousPage < 1) {
+    document.getElementById(ytvbp.PREVIOUS_PAGE_BUTTON).disabled = true;
+  } else {
+    document.getElementById(ytvbp.PREVIOUS_PAGE_BUTTON).disabled = false;
+  }
+  document.getElementById(ytvbp.NEXT_PAGE_BUTTON).disabled = false;
+};
+
+/**
+ * Hides the main (large) search form and enables one that's in the
+ * title bar of the application.  The main search form is only used
+ * for the first load.  Subsequent searches should use the version in
+ * the title bar.
+ */
+ytvbp.hideMainSearch = function() {
+  document.getElementById(ytvbp.MAIN_SEARCH_CONTAINER_DIV).style.display = 
+      'none';
+  document.getElementById(ytvbp.TOP_SEARCH_CONTAINER_DIV).style.display = 
+      'inline';
+};
+
+/**
+ * Method called when the query type has been changed.  Clears out the
+ * value of the search term input box by default if one of the standard
+ * feeds is selected.  This is to improve usability, as many of the standard
+ * feeds may not include results for even fairly popular search terms.
+ * @param {String} queryType The type of query being done - either 'all'
+ *     for querying all videos, or the name of one of the standard feeds.
+ * @param {Node} searchTermInputElement The HTML input element for the input
+ *     element.
+ */
+ytvbp.queryTypeChanged = function(queryType, searchTermInputElement) {
+  if (queryType != 'all') {
+    searchTermInputElement.value = '';
+  }
+};