/*
 * jTweetsAnywhere V1.2.1
 * http://thomasbillenstein.com/jTweetsAnywhere/
 *
 * Copyright 2010, Thomas Billenstein
 * Licensed under the MIT license.
 * http://thomasbillenstein.com/jTweetsAnywhere/license.txt
 */
(function($) {
    $.fn.jTweetsAnywhere = function(options) {
        // setup the default options
        var options = $.extend(
		{
		    /**
		    * The user's name who's tweet feed or list feed is displayed. This
		    * param is also used when a Twitter "Follow Button" is displayed. Usually
		    * this param is a string, but can also be an array of strings. If an array
		    * is supplied (and the params 'list' and 'searchParams' are null), a
		    * combined feed of all users is displayed.
		    *
		    * Sample: 'tbillenstein' or ['twitterapi', '...', '...']
		    */
		    username: 'tbillenstein',

		    /**
		    * The name of a user's list where the tweet feed is generated from
		    */
		    list: null,

		    /**
		    * A single search param string or an array of search params, to be used in
		    * a Twitter search call. All Twitter Search Params are supported
		    * See here for the details:
		    * http://apiwiki.twitter.com/Twitter-Search-API-Method%3A-search
		    *
		    * Sample: 'q=twitter' or ['q=twitter', 'geocode=48.856667,2.350833,30km']
		    */
		    searchParams: null,

		    /**
		    * The number of tweets shown in the tweet feed. If this param is 0, no feed
		    * is displayed. For user or list feeds the maximum count is 20, for search
		    * results the maximum count is 100.
		    *
		    * Unlike in previous releases, since 1.2.0 jTweetsAnywhere is based on a
		    * tweets caching algorithm that will always deliver the requested count of
		    * tweets accepting that this request can only be fullfilled by calling Twitter
		    * more than once.
		    *
		    * IMPORTANT: Please always keep in mind, that the use of the Twitter API is
		    * rate limited. Non-authenticated users are rated IP-based and you have only
		    * 150 calls per hour available. Every retrieval of tweets counts and so does
		    * for example hovering over a profile image to show the hovercard.
		    * jTweetsAnywhere will always check the remaining count of free API calls before
		    * actually calling Twitter to avoid black listing your visitor's IP.
		    */
		    count: 0,

		    /**
		    * A flag (true/false) that specifies whether to display a profile image in
		    * tweets. If the param is set to null (the default value), a profile image
		    * is displayed only if the feed represents a user's list or the result of a
		    * Twitter search.
		    *
		    * THIS OPTION IS DEPRECATED. You should use showTweetFeed.showProfileImages
		    * instead.
		    */
		    tweetProfileImagePresent: null,

		    /**
		    * Each tweet that is loaded from Twitter will pass the tweetFilter. if
		    * the filter returns true, the tweet will be added to the tweets cache
		    * otherwise it is ignored. The defaultTweetFilter alsways retruns true
		    * but you can supply your own tweet filter to customize the tweet feed.
		    */
		    tweetFilter: defaultTweetFilter,

		    /**
		    * A flag (true/false) that specifies whether to display a Tweet Feed
		    * or an object literal representing the configuration options for the
		    * Tweet Feed. This flag works in conjunction with the count parameter:
		    * - if count equals 0, no feed is displayed, ignoring showTweetFeed
		    * - if count not equals 0 and showTweetFeed equals false, no feed
		    *   is displayed
		    * {
		    *     expandHovercards: false,		// Boolean - Show Hovercards in expanded mode.
		    *
		    *     showTimestamp: true, 		// A flag (true/false) that specifies whether to display a tweet's timestamp
		    * 									// or an object literal representing the configuration options for the
		    * 									// timestamp.
		    * 									// {
		    * 									//     refreshInterval: 0,	// Time in seconds to be waited until the
		    * 									//							// timestamps of the displayed tweets get refreshed
		    *									// 							// 0 means no refreshing.
		    * 									// }
		    *
		    *     showSource: false,			// Boolean - Show info about the source of the tweet.
		    *
		    *     showGeoLocation: true,		// Boolean - Show geolocation info and link to Google maps.
		    *
		    *     showInReplyTo: true,			// Boolean - Show link to the "replied to" tweet (if available).
		    *
		    *     showProfileImages: null,		// A flag (true/false) that specifies whether to display a profile image in
		    * 									// tweets. If the param is set to null (the default value), a profile image
		    * 									// is displayed only if the feed represents a user's list or the result of a
		    * 									// Twitter search.
		    *
		    *     showUserScreenNames: null,	// A flag (true/false/null) that specifies whether to display a username in
		    * 									// tweets. If the param is set to null (the default value), a username
		    * 									// is displayed only if the feed represents a user's list or the result of a
		    * 									// Twitter search.
		    *
		    *     showUserFullNames: false,	// A flag (true/false/null) that specifies whether to display a user's full name
		    * 									// in tweets. If the param is set to null, a user's full name
		    * 									// is displayed only if the feed represents a user's list or the result of a
		    * 									// Twitter search.
		    *
		    *	   includeRetweets: true,		// Boolean - Include native retweets in a user's tweet feed
		    *
		    *     paging:						// An object literal representing the configuration options for the
		    *     {							// paging support, that specifies how more/earlier tweets can be loaded
		    *         mode: "none"		   		// by using the supplied UI controls (more/next buttons, scrollbar).
		    *     },                           // Accepted values for mode are: "none" | "more" | "prev-next" | "endless-scroll"
		    *									// if mode equals "endless-scroll" you have to set the height of the tweet feed
		    *									// element (.jta-tweet-list) in your CSS to get a scrollbar! You should also set
		    *									// the "overflow" attribute to "auto".
		    *
		    *     autorefresh:					// An object literal representing the configuration options for the
		    *	   {							// autorefresh behaviour.
		    *
		    *									// IMPORTANT: Please always keep in mind, that using the Twitter API is rate
		    *									// limited. Non-authenticated users are rated IP-based and you have only 150
		    *									// calls per hour available. Every retrieval of tweets counts and so does for
		    *									// example hovering over a profile image to show the hovercard. jTweetsAnywhere will
		    *									// always check the remaining count of free API calls before actually calling
		    *									// Twitter to avoid black listing your visitor's IP.
		    *
		    * 									// However - choose your settings wisely to keep your visitors happy. An update
		    *									// interval of 30 seconds on a feed that is updated averaged once per hour
		    *									// does not make sense and is a total waste of remaining API calls!
		    *
		    *	       mode: "none",            // Accepted values for mode are: "none" | "auto-insert" | "trigger-insert"
		    *									// "none" (the default value) - disables the autorefresh feature
		    *									// "auto-insert" - automatically insert the new tweets on top of the tweet feed
		    *									// "trigger-insert" - if new tweets arrived, show or update a button that displays
		    *									// the number of new tweets. These new tweets are inserted on top of the tweet
		    *									// feed, if the user clicks on the button.
		    *
		    *	       interval: 60,			// Time in seconds to be waited until the next request for new tweets. Minimum
		    *									// value is 30.
		    *
		    *         duration: 3600			// Time in seconds for how long the autorefresh will be active. After
		    *									// this period of time, autorefreshing will stop. A value of -1 means
		    *									// autorefresh for ever.
		    *    }
		    * }
		    */
		    showTweetFeed: true,

		    /**
		    * A flag (true/false) that specifies whether to display a Twitter "Follow
		    * Button".
		    */
		    showFollowButton: false,

		    /**
		    * A flag (true/false) that specifies whether to display a Twitter "Connect
		    * Button" or an object literal representing the configuration options for
		    * the "Tweet Box".
		    * {
		    *     size: 'medium'				// String - The size of the Connect Button. Valid values are: small, medium, large, xlarge
		    * }
		    */
		    showConnectButton: false,

		    /**
		    * A flag (true/false) that specifies whether to display Login Infos.
		    */
		    showLoginInfo: false,

		    /**
		    * A flag (true/false) that specifies whether to display a Twitter "Tweet
		    * Box" or an object literal representing the configuration options for
		    * the "Tweet Box".
		    * {
		    *     counter: true,				// Boolean - Display a counter in the Tweet Box for counting characters
		    *     width: 515,					// Number - The width of the Tweet Box in pixels
		    *     height: 65,					// Number - The height of the Tweet Box in pixels
		    *     label: "What's happening",	// String - The text above the Tweet Box, a call to action
		    *     defaultContent: <none>,		// String - Pre-populated text in the Tweet Box. Useful for an @mention, a #hashtag, a link, etc.
		    *     onTweet: <none>				// Function - Specify a listener for when a tweet is sent from the Tweet Box. The listener receives two arguments: a plaintext tweet and an HTML tweet
		    * }
		    */
		    showTweetBox: false,

		    /**
		    * A decorator is a function that is responsible for constructing a certain
		    * element of the widget. Most of the decorators return a HTML string.
		    * Exceptions are the mainDecorator, which defines the basic sequence of
		    * the widget's components, plus the linkDecorator, the usernameDecorator
		    * and the hashtagDecorator which return the string that is supplied as a
		    * function param, enriched with the HTML tags.
		    *
		    * For details, see the implementations of the default decorators. Each
		    * default decorator can be overwritten by your own implementation.
		    */
		    mainDecorator: defaultMainDecorator,

		    tweetFeedDecorator: defaultTweetFeedDecorator,

		    tweetDecorator: defaultTweetDecorator,
		    tweetProfileImageDecorator: defaultTweetProfileImageDecorator,
		    tweetBodyDecorator: defaultTweetBodyDecorator,
		    tweetUsernameDecorator: defaultTweetUsernameDecorator,
		    tweetTextDecorator: defaultTweetTextDecorator,
		    tweetAttributesDecorator: defaultTweetAttributesDecorator,
		    tweetTimestampDecorator: defaultTweetTimestampDecorator,
		    tweetSourceDecorator: defaultTweetSourceDecorator,
		    tweetGeoLocationDecorator: defaultTweetGeoLocationDecorator,
		    tweetInReplyToDecorator: defaultTweetInReplyToDecorator,
		    tweetRetweeterDecorator: defaultTweetRetweeterDecorator,

		    tweetFeedControlsDecorator: defaultTweetFeedControlsDecorator,
		    tweetFeedControlsMoreBtnDecorator: defaultTweetFeedControlsMoreBtnDecorator,
		    tweetFeedControlsPrevBtnDecorator: defaultTweetFeedControlsPrevBtnDecorator,
		    tweetFeedControlsNextBtnDecorator: defaultTweetFeedControlsNextBtnDecorator,

		    tweetFeedAutorefreshTriggerDecorator: defaultTweetFeedAutorefreshTriggerDecorator,
		    tweetFeedAutorefreshTriggerContentDecorator: defaultTweetFeedAutorefreshTriggerContentDecorator,

		    connectButtonDecorator: defaultConnectButtonDecorator,

		    loginInfoDecorator: defaultLoginInfoDecorator,
		    loginInfoContentDecorator: defaultLoginInfoContentDecorator,

		    followButtonDecorator: defaultFollowButtonDecorator,

		    tweetBoxDecorator: defaultTweetBoxDecorator,

		    linkDecorator: defaultLinkDecorator,
		    usernameDecorator: defaultUsernameDecorator,
		    hashtagDecorator: defaultHashtagDecorator,

		    loadingDecorator: defaultLoadingDecorator,
		    errorDecorator: defaultErrorDecorator,
		    noDataDecorator: defaultNoDataDecorator,

		    /**
		    * Formatters are currently used for date format processing only.
		    *
		    * The tweetTimestampFormatter formats the tweet's timestamp to be shown
		    * in the tweet attributes section
		    *
		    * For details, see the implementation of the defaultTweetTimestampFormatter.
		    */
		    tweetTimestampFormatter: defaultTweetTimestampFormatter,

		    /**
		    * The tweetTimestampTooltipFormatter formats the tweet's timestamp to be shown
		    * in the tooltip when hovering over the timestamp link.
		    */
		    tweetTimestampTooltipFormatter: defaultTweetTimestampTooltipFormatter,

		    /**
		    * A visualizer is a function that is responsible for adding one or more
		    * elements to the DOM and thereby making them visible to the user.
		    * A visualizer might also be responsible to do the opposite effect:
		    * To remove one or more elements from the DOM.
		    *
		    * The tweetVisualizer gets called each time a tweet element should be
		    * appended or prepended to the tweet feed element.
		    *
		    * For details, see the implementation of the defaultTweetVisualizer.
		    *
		    * Each default visualizer can be overwritten by your own implementation.
		    */
		    tweetVisualizer: defaultTweetVisualizer,

		    /**
		    * The loadingIndicatorVisualizer gets called each time data is retrieved
		    * from Twitter to visualize the loading indicator. This visualizer is also
		    * used to hide the loading indicator.
		    *
		    * For details, see the implementation of the defaultLoadingIndicatorVisualizer.
		    */
		    loadingIndicatorVisualizer: defaultLoadingIndicatorVisualizer,

		    /**
		    * The autorefreshTriggerVisualizer will be called if the autorefresh
		    * trigger should be visualized or hidden.
		    *
		    * For details, see the implementation of the autorefreshTriggerVisualizer.
		    */
		    autorefreshTriggerVisualizer: defaultAutorefreshTriggerVisualizer,

		    /**
		    * An event handler is a function that gets called whenever the event you
		    * are interested in, occurs.
		    *
		    * The onDataRequest event handler will be called immediatly before calling
		    * Twitter to retrieve new data and gives you the opportunity to deny
		    * the call by returning false from the function.
		    *
		    * This feature might be used in conjunction with the paging feature,
		    * especially when using the "endless-scroll" paging mode, to avoid the
		    * exhaustion of remaining Twitter API calls, before the rate limit is
		    * reached. The stats parameter contains statistical infos and counters
		    * that you can examine to base your decision whether to return true or
		    * false.
		    */
		    onDataRequestHandler: defaultOnDataRequestHandler,

		    /**
		    * The onRateLimitData event handler is called each time
		    * jTweetsAnywhere retrieved the rate limit data from Twitter. The actual
		    * rate limit data is contained in the stats object.
		    */
		    onRateLimitDataHandler: defaultOnRateLimitDataHandler,

		    _tweetFeedConfig:
			{
			    expandHovercards: false,
			    showTimestamp:
				{
				    refreshInterval: 0
				},
			    showSource: false,
			    showGeoLocation: true,
			    showInReplyTo: true,
			    showProfileImages: null,
			    showUserScreenNames: null,
			    showUserFullNames: false,
			    includeRetweets: true,
			    paging:
				{
				    mode: "none",
				    _limit: 0,
				    _offset: 0
				},
			    autorefresh:
				{
				    mode: "none",
				    interval: 60,
				    duration: 3600,
				    _startTime: null,
				    _triggerElement: null
				},
			    _pageParam: 0,
			    _maxId: null,
			    _recLevel: 0,
			    _noData: false,
			    _clearBeforePopulate: false
			},
		    _tweetBoxConfig:
			{
			    counter: true,
			    width: 515,
			    height: 65,
			    label: "What's happening?",
			    defaultContent: '',
			    onTweet: function(textTweet, htmlTweet) { }
			},
		    _connectButtonConfig:
			{
			    size: "medium"
			},
		    _baseSelector: null,
		    _baseElement: null,
		    _tweetFeedElement: null,
		    _tweetFeedControlsElement: null,
		    _followButtonElement: null,
		    _loginInfoElement: null,
		    _connectButtonElement: null,
		    _tweetBoxElement: null,
		    _loadingIndicatorElement: null,
		    _noDataElement: null,
		    _tweetsCache: [],
		    _autorefreshTweetsCache: [],
		    _stats:
			{
			    dataRequestCount: 0,
			    rateLimitPreventionCount: 0,
			    rateLimit:
				{
				    remaining_hits: 150,
				    hourly_limit: 150
				}
			}
		}, options);

        // no main decorator? nothing to do!
        if (!options.mainDecorator) {
            return;
        }

        options._baseSelector = this.selector;

        // if username is an array, create the search query and flatten username
        if (typeof (options.username) != 'string') {
            if (!options.searchParams) {
                options.searchParams = ['q=from:' + options.username.join(" OR from:")];
            }

            options.username = options.username[0];
        }

        // if showTweetFeed is not set to a boolean value, we expect the configuration of
        // the tweet feed
        if (typeof (options.showTweetFeed) == 'object') {
            $.extend(true, options._tweetFeedConfig, options.showTweetFeed);
        }

        // if showTweetBox is not set to a boolean value, we expect the configuration of
        // the TweetBox
        if (typeof (options.showTweetBox) == 'object') {
            options._tweetBoxConfig = options.showTweetBox;
            options.showTweetBox = true;
        }

        // if showConnectButton is not set to a boolean value, we expect the
        // configuration of the Connect Button
        if (typeof (options.showConnectButton) == 'object') {
            options._connectButtonConfig = options.showConnectButton;
            options.showConnectButton = true;
        }

        // to be compatible, check the deprecated option 'tweetProfileImagePresent'
        if (options._tweetFeedConfig.showProfileImages == null) {
            options._tweetFeedConfig.showProfileImages = options.tweetProfileImagePresent;
        }

        // if _tweetFeedConfig.showProfileImages is not set to a boolean value,
        // we decide to show a profile image if the feed represents a user's
        // list or the results of a Twitter search
        if (options._tweetFeedConfig.showProfileImages == null) {
            options._tweetFeedConfig.showProfileImages = (options.list || options.searchParams) && options.tweetProfileImageDecorator;
        }

        // if _tweetFeedConfig.showUserScreenNames is not set to a boolean value,
        // we decide to show a username if the feed represents a user's
        // list or the results of a Twitter search or a tweet is a native retweet
        if (options._tweetFeedConfig.showUserScreenNames == null) {
            if (options.list || options.searchParams) {
                options._tweetFeedConfig.showUserScreenNames = true;
            }

            if (!options.tweetUsernameDecorator) {
                options._tweetFeedConfig.showUserScreenNames = false;
            }
        }

        // if _tweetFeedConfig.showUserFullNames is not set to a boolean value,
        // we decide to show a user's full name if the feed represents a user's
        // list or the results of a Twitter search or a tweet is a native retweet
        if (options._tweetFeedConfig.showUserFullNames == null) {
            if (options.list || options.searchParams) {
                options._tweetFeedConfig.showUserFullNames = true;
            }

            if (!options.tweetUsernameDecorator) {
                options._tweetFeedConfig.showUserFullNames = false;
            }
        }

        options.count = validateRange(options.count, 0, options.searchParams ? 100 : 20);

        options._tweetFeedConfig.autorefresh.interval = Math.max(30, options._tweetFeedConfig.autorefresh.interval);

        options._tweetFeedConfig.paging._offset = 0;
        options._tweetFeedConfig.paging._limit = options.count;

        // internally, the decision of what parts of a widget are to be
        // displayed is based on the existence of the decorators
        if (options.count == 0 || !options.showTweetFeed) {
            options.tweetFeedDecorator = null;
            options.tweetFeedControlsDecorator = null;
        }

        if (options._tweetFeedConfig.paging.mode == 'none') {
            options.tweetFeedControlsDecorator = null;
        }

        if (!options.showFollowButton) {
            options.followButtonDecorator = null;
        }

        if (!options.showTweetBox) {
            options.tweetBoxDecorator = null;
        }

        if (!options.showConnectButton) {
            options.connectButtonDecorator = null;
        }

        if (!options.showLoginInfo) {
            options.loginInfoDecorator = null;
        }

        if (!options._tweetFeedConfig.showTimestamp) {
            options.tweetTimestampDecorator = null;
        }

        if (!options._tweetFeedConfig.showSource) {
            options.tweetSourceDecorator = null;
        }

        if (!options._tweetFeedConfig.showGeoLocation) {
            options.tweetGeoLocationDecorator = null;
        }

        if (!options._tweetFeedConfig.showInReplyTo) {
            options.tweetInReplyToDecorator = null;
        }

        // setup ajax
        $.ajaxSetup({ cache: true });

        return this.each(function() {
            // the DOM element, where to display the widget
            options._baseElement = $(this);

            // create the widget's necessary sub DOM elements
            options._tweetFeedElement = options.tweetFeedDecorator ? $(options.tweetFeedDecorator(options)) : null;
            options._tweetFeedControlsElement = options.tweetFeedControlsDecorator ? $(options.tweetFeedControlsDecorator(options)) : null;
            options._followButtonElement = options.followButtonDecorator ? $(options.followButtonDecorator(options)) : null;
            options._tweetBoxElement = options.tweetBoxDecorator ? $(options.tweetBoxDecorator(options)) : null;
            options._connectButtonElement = options.connectButtonDecorator ? $(options.connectButtonDecorator(options)) : null;
            options._loginInfoElement = options.loginInfoDecorator ? $(options.loginInfoDecorator(options)) : null;

            // add the widget to the DOM
            options.mainDecorator(options);

            populateTweetFeed(options);
            populateAnywhereControls(options);

            // bind event handlers to support paging
            bindEventHandlers(options);

            // install autorefresh support
            options._tweetFeedConfig.autorefresh._startTime = new Date().getTime();
            startAutorefresh(options);
            startTimestampRefresh(options);
        });
    };
    defaultMainDecorator = function(options) {
        // defines the default sequence of the widget's elements
        if (options._tweetFeedElement) {
            options._baseElement.append(options._tweetFeedElement);
        }

        if (options._tweetFeedControlsElement) {
            options._baseElement.append(options._tweetFeedControlsElement);
        }

        if (options._connectButtonElement) {
            options._baseElement.append(options._connectButtonElement);
        }

        if (options._loginInfoElement) {
            options._baseElement.append(options._loginInfoElement);
        }

        if (options._followButtonElement) {
            options._baseElement.append(options._followButtonElement);
        }

        if (options._tweetBoxElement) {
            options._baseElement.append(options._tweetBoxElement);
        }
    };
    defaultTweetFeedControlsDecorator = function(options) {
        // the default tweet feed's paging controls
        var html = '';

        if (options._tweetFeedConfig.paging.mode == 'prev-next') {
            if (options.tweetFeedControlsPrevBtnDecorator) {
                html += options.tweetFeedControlsPrevBtnDecorator(options);
            }

            if (options.tweetFeedControlsNextBtnDecorator) {
                html += options.tweetFeedControlsNextBtnDecorator(options);
            }
        }
        else if (options._tweetFeedConfig.paging.mode == 'endless-scroll') {
            // nothing to do here atm
        }
        else {
            if (options.tweetFeedControlsMoreBtnDecorator) {
                html += options.tweetFeedControlsMoreBtnDecorator(options);
            }
        }

        return '<div class="jta-tweet-list-controls">' + html + '</div>';
    };
    defaultTweetFeedControlsMoreBtnDecorator = function(options) {
        return '<span class="jta-tweet-list-controls-button jta-tweet-list-controls-button-more">' + 'More' + '</span>';
    };
    defaultTweetFeedControlsPrevBtnDecorator = function(options) {
        return '<span class="jta-tweet-list-controls-button jta-tweet-list-controls-button-prev">' + 'Prev' + '</span>';
    };
    defaultTweetFeedControlsNextBtnDecorator = function(options) {
        return '<span class="jta-tweet-list-controls-button jta-tweet-list-controls-button-next">' + 'Next' + '</span>';
    };
    defaultTweetFeedAutorefreshTriggerDecorator = function(count, options) {
        var html = '';

        if (options.tweetFeedAutorefreshTriggerContentDecorator) {
            html = options.tweetFeedAutorefreshTriggerContentDecorator(count, options);
        }

        return '<li class="jta-tweet-list-autorefresh-trigger">' + html + '</li>';
    };
    defaultTweetFeedAutorefreshTriggerContentDecorator = function(count, options) {
        var content = '' + count + ' new ' + (count > 1 ? ' tweets' : ' tweet');

        return '<span class="jta-tweet-list-autorefresh-trigger-content">' + content + '</span>';
    };
    defaultTweetFeedDecorator = function(options) {
        // the default placeholder for the tweet feed is an unordered list
        return '<ul class="jta-tweet-list"></ul>';
    };
    defaultTweetDecorator = function(tweet, options) {
        // the default tweet is made of the optional user's profile image and the
        // tweet body inside a list item element
        var html = '';

        if (options._tweetFeedConfig.showProfileImages) {
            html += options.tweetProfileImageDecorator(tweet, options);
        }

        if (options.tweetBodyDecorator) {
            html += options.tweetBodyDecorator(tweet, options);
        }

        html += '<div class="jta-clear">&nbsp;</div>';

        return '<li class="jta-tweet-list-item">' + html + '</li>';
    };
    defaultTweetProfileImageDecorator = function(tweet, options) {
        // if tweet is a native retweet, use the retweet's profile
        var t = tweet.retweeted_status || tweet;

        // the default profile image decorator simply adds a link to the user's Twitter profile
        var screenName = t.user ? t.user.screen_name : false || t.from_user;
        var imageUrl = t.user ? t.user.profile_image_url : false || t.profile_image_url;

        var html =
			'<a class="jta-tweet-profile-image-link" href="http://twitter.com/' + screenName + '" target="_blank">' +
			'<img src="' + imageUrl + '" alt="' + screenName + '"' +
			(isAnywherePresent() ? '' : (' title="' + screenName + '"')) +
			'/>' +
			'</a>';

        return '<div class="jta-tweet-profile-image">' + html + '</div>';
    };
    defaultTweetBodyDecorator = function(tweet, options) {
        // the default tweet body contains the tweet text and the tweet's creation date
        var html = '';

        if (options.tweetTextDecorator) {
            html += options.tweetTextDecorator(tweet, options);
        }

        if (options.tweetAttributesDecorator) {
            html += options.tweetAttributesDecorator(tweet, options);
        }

        return '<div class="jta-tweet-body ' + (options._tweetFeedConfig.showProfileImages ? 'jta-tweet-body-list-profile-image-present' : '') + '">' + html + '</div>';
    };
    defaultTweetTextDecorator = function(tweet, options) {
        var tweetText = tweet.text;

        // if usernames should be visible and tweet is a native retweet, use
        // the original tweet text
        if (tweet.retweeted_status &&
			(
				options._tweetFeedConfig.showUserScreenNames ||
				options._tweetFeedConfig.showUserScreenNames == null ||
				options._tweetFeedConfig.showUserFullNames ||
				options._tweetFeedConfig.showUserFullNames == null
			)
		) {
            tweetText = tweet.retweeted_status.text;
        }

        // the default tweet text decorator optionally marks links, @usernames,
        // and #hashtags
        if (options.linkDecorator) {
            tweetText = options.linkDecorator(tweetText, options);
        }

        if (options.usernameDecorator) {
            tweetText = options.usernameDecorator(tweetText, options);
        }

        if (options.hashtagDecorator) {
            tweetText = options.hashtagDecorator(tweetText, options);
        }

        if (options._tweetFeedConfig.showUserScreenNames ||
			options._tweetFeedConfig.showUserFullNames ||
			tweet.retweeted_status &&
			(
				options._tweetFeedConfig.showUserScreenNames == null ||
				options._tweetFeedConfig.showUserFullNames == null
			)
		) {
            tweetText = options.tweetUsernameDecorator(tweet, options) + ' ' + tweetText;
        }

        return '<span class="jta-tweet-text">' + tweetText + '</span>';
    };
    defaultTweetUsernameDecorator = function(tweet, options) {
        // if tweet is a native retweet, use the retweet's profile
        var t = tweet.retweeted_status || tweet;
        var screenName = t.user ? t.user.screen_name : false || t.from_user;
        var fullName = t.user ? t.user.name : null;

        var htmlScreenName;
        if (screenName && (options._tweetFeedConfig.showUserScreenNames || (options._tweetFeedConfig.showUserScreenNames == null && tweet.retweeted_status))) {
            htmlScreenName =
				'<span class="jta-tweet-user-screen-name">' +
				'<a class="jta-tweet-user-screen-name-link" href="http://twitter.com/' + screenName + '" target="_blank">' +
				screenName +
				'</a>' +
				'</span>';
        }

        var htmlFullName;
        if (fullName && (options._tweetFeedConfig.showUserFullNames || (options._tweetFeedConfig.showUserFullNames == null && tweet.retweeted_status))) {
            htmlFullName =
				'<span class="jta-tweet-user-full-name">' +
				(htmlScreenName ? ' (' : '') +
				'<a class="jta-tweet-user-full-name-link" href="http://twitter.com/' + screenName + '" name="' + screenName + '" target="_blank">' +
				fullName +
				'</a>' +
				(htmlScreenName ? ')' : '') +
				'</span>';
        }

        var html = "";

        if (htmlScreenName) {
            html += htmlScreenName;
        }

        if (htmlFullName) {
            if (htmlScreenName) {
                html += ' ';
            }

            html += htmlFullName;
        }

        if (htmlScreenName || htmlFullName) {
            html =
				'<span class="jta-tweet-user-name">' +
				(tweet.retweeted_status ? 'RT ' : '') +
				html +
				'</span>';
        }

        return html;
    };
    defaultTweetAttributesDecorator = function(tweet, options) {
        var html = '';

        if (options.tweetTimestampDecorator ||
			options.tweetSourceDecorator ||
			options.tweetGeoLocationDecorator ||
			options.tweetInReplyToDecorator ||
			(tweet.retweeted_status && options.tweetRetweeterDecorator)
		) {
            html += '<span class="jta-tweet-attributes">';

            if (options.tweetTimestampDecorator) {
                html += options.tweetTimestampDecorator(tweet, options);
            }

            if (options.tweetSourceDecorator) {
                html += options.tweetSourceDecorator(tweet, options);
            }

            if (options.tweetGeoLocationDecorator) {
                html += options.tweetGeoLocationDecorator(tweet, options);
            }

            if (options.tweetInReplyToDecorator) {
                html += options.tweetInReplyToDecorator(tweet, options);
            }

            if (tweet.retweeted_status && options.tweetRetweeterDecorator) {
                html += options.tweetRetweeterDecorator(tweet, options);
            }

            html += '</span>';
        }

        return html;
    };
    defaultTweetTimestampDecorator = function(tweet, options) {
        // the default tweet timestamp decorator does a little bit of Twitter like formatting.

        // if tweet is a native retweet, use the retweet's timestamp
        var tw = tweet.retweeted_status || tweet;

        // reformat timestamp from Twitter, so IE is happy
        var createdAt = formatDate(tw.created_at);

        // format the timestamp by the tweetTimestampFormatter
        var tweetTimestamp = options.tweetTimestampFormatter(createdAt);
        var tweetTimestampTooltip = options.tweetTimestampTooltipFormatter(createdAt);

        var screenName = tw.user ? tw.user.screen_name : false || tw.from_user;
        var html =
			'<span class="jta-tweet-timestamp">' +
			'<a class="jta-tweet-timestamp-link" data-timestamp="' + createdAt +
			'" href="http://twitter.com/' + screenName + '/status/' + tw.id + '" target="_blank" title="' +
			tweetTimestampTooltip + '">' +
			tweetTimestamp +
			'</a>' +
			'</span>';

        return html;
    };
    defaultTweetTimestampTooltipFormatter = function(timeStamp) {
        var d = new Date(timeStamp);

        return d.toLocaleString();
    };
    defaultTweetTimestampFormatter = function(timeStamp) {
        var now = new Date();

        var diff = parseInt((now.getTime() - Date.parse(timeStamp)) / 1000);

        var tweetTimestamp = '';
        if (diff < 60) {
            tweetTimestamp += diff + ' second' + (diff == 1 ? '' : 's') + ' ago';
        }
        else if (diff < 3600) {
            var t = parseInt((diff + 30) / 60);
            tweetTimestamp += t + ' minute' + (t == 1 ? '' : 's') + ' ago';
        }
        else if (diff < 86400) {
            var t = parseInt((diff + 1800) / 3600);
            tweetTimestamp += t + ' hour' + (t == 1 ? '' : 's') + ' ago';
        }
        else {
            var d = new Date(timeStamp);
            var period = 'AM';

            var hours = d.getHours();
            if (hours > 12) {
                hours -= 12;
                period = 'PM';
            }

            var mins = d.getMinutes();
            var minutes = (mins < 10 ? '0' : '') + mins;

            var monthName = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];

            tweetTimestamp += monthName[d.getMonth()] + ' ' + d.getDate();

            if (d.getFullYear() < now.getFullYear()) {
                tweetTimestamp += ', ' + d.getFullYear();
            }

            var t = parseInt((diff + 43200) / 86400);
            tweetTimestamp += ' (' + t + ' day' + (t == 1 ? '' : 's') + ' ago)';
        }

        return tweetTimestamp;
    };
    exTimestampFormatter = function(timeStamp) {
        var diff = parseInt((new Date().getTime() - Date.parse(timeStamp)) / 1000);

        var tweetTimestamp = '';
        if (diff < 60) {
            tweetTimestamp += 'less than a minute ago';
        }
        else if (diff < 3600) {
            var t = parseInt((diff + 30) / 60);
            tweetTimestamp += t + ' minute' + (t == 1 ? '' : 's') + ' ago';
        }
        else if (diff < 86400) {
            var t = parseInt((diff + 1800) / 3600);
            tweetTimestamp += 'about ' + t + ' hour' + (t == 1 ? '' : 's') + ' ago';
        }
        else {
            var t = parseInt((diff + 43200) / 86400);
            tweetTimestamp += 'about ' + t + ' day' + (t == 1 ? '' : 's') + ' ago';

            var d = new Date(timeStamp);
            var period = 'AM';

            var hours = d.getHours();
            if (hours > 12) {
                hours -= 12;
                period = 'PM';
            }

            var mins = d.getMinutes();
            var minutes = (mins < 10 ? '0' : '') + mins;

            tweetTimestamp += ' (' + hours + ':' + minutes + ' ' + period + ' ' + (d.getMonth() + 1) + '/' + d.getDate() + '/' + d.getFullYear() + ')';
        }

        return tweetTimestamp;
    };
    defaultTweetSourceDecorator = function(tweet, options) {
        // if tweet is a native retweet, use the retweet's source
        var tw = tweet.retweeted_status || tweet;

        var source = tw.source.replace(/\&lt\;/gi, '<').replace(/\&gt\;/gi, '>').replace(/\&quot\;/gi, '"');
        var html =
			'<span class="jta-tweet-source">' +
			' via ' +
			'<span class="jta-tweet-source-link">' +
			source +
			'</span>' +
			'</span>';

        return html;
    };
    defaultTweetGeoLocationDecorator = function(tweet, options) {
        var html = '';

        // if tweet is a native retweet, use the retweet's source
        var tw = tweet.retweeted_status || tweet;

        var q;
        if (tw.geo && tw.geo.coordinates) {
            q = tw.geo.coordinates.join();
        }
        else if (tw.place && tw.place.full_name) {
            q = tw.place.full_name;
        }

        if (q) {
            var location = 'here';
            if (tw.place && tw.place.full_name) {
                location = tw.place.full_name;
            }

            var link = 'http://maps.google.com/maps?q=' + q;

            html =
				'<span class="jta-tweet-location">' +
				' from ' +
				'<a class="jta-tweet-location-link" href="' + link + '" target="_blank">' +
				location +
				'</a>' +
				'</span>';
        }

        return html;
    };
    defaultTweetInReplyToDecorator = function(tweet, options) {
        // if tweet is a native retweet, use the retweet's source
        var tw = tweet.retweeted_status || tweet;

        var html = '';
        if (tw.in_reply_to_status_id && tw.in_reply_to_screen_name) {
            html =
				'<span class="jta-tweet-inreplyto">' +
				' ' +
				'<a class="jta-tweet-inreplyto-link" href="http://twitter.com/' + tw.in_reply_to_screen_name + '/status/' + tw.in_reply_to_status_id + '" target="_blank">' +
				'in reply to ' + tw.in_reply_to_screen_name +
				'</a>' +
				'</span>';
        }

        return html;
    };
    defaultTweetRetweeterDecorator = function(tweet, options) {
        var html = '';

        if (tweet.retweeted_status) {
            var screenName = tweet.user ? tweet.user.screen_name : false || tweet.from_user;
            var rtc = (tweet.retweeted_status.retweet_count || 0) - 1;

            var link =
				'<a class="jta-tweet-retweeter-link" href="http://twitter.com/' + screenName + '" target="_blank">' +
				screenName +
				'</a>';
            var rtcount = ' and ' + rtc + (rtc > 1 ? ' others' : ' other');
            html =
				'<br/>' +
				'<span class="jta-tweet-retweeter">' +
				'Retweeted by ' + link +
				(rtc > 0 ? rtcount : '') +
				'</span>';
        }

        return html;
    };
    defaultConnectButtonDecorator = function(options) {
        // the default placeholder for the @Anywhere ConnectButton
        return '<div class="jta-connect-button"></div>';
    };
    defaultLoginInfoDecorator = function(options) {
        // the default placeholder for the LoginInfo
        return '<div class="jta-login-info"></div>';
    };
    defaultLoginInfoContentDecorator = function(options, T) {
        // the default markup of the LoginInfo content: the user's profile image, the
        // user's screen_name and a "button" to sign out
        var html = '';

        if (T.isConnected()) {
            var screenName = T.currentUser.data('screen_name');
            var imageUrl = T.currentUser.data('profile_image_url');

            html =
				'<div class="jta-login-info-profile-image">' +
				'<a href="http://twitter.com/' + screenName + '" target="_blank">' +
				'<img src="' + imageUrl + '" alt="' + screenName + '" title="' + screenName + '"/>' +
				'</a>' +
				'</div>' +
				'<div class="jta-login-info-block">' +
				'<div class="jta-login-info-screen-name">' +
				'<a href="http://twitter.com/' + screenName + '" target="_blank">' + screenName + '</a>' +
				'</div>' +
				'<div class="jta-login-info-sign-out">' +
				'Sign out' +
				'</div>' +
				'</div>' +
				'<div class="jta-clear">&nbsp;</div>'
				;
        }

        return html;
    };
    defaultFollowButtonDecorator = function(options) {
        // the default placeholder for the @Anywhere FollowButton
        return '<div class="jta-follow-button"></div>';
    };
    defaultTweetBoxDecorator = function(options) {
        // the default placeholder for the @Anywhere TweetBox
        return '<div class="jta-tweet-box"></div>';
    };
    defaultLinkDecorator = function(text, options) {
        // the regex to markup links
        return text.replace(/((ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?)/gi, '<a href="$1" class="jta-tweet-a jta-tweet-link" target="_blank" rel="nofollow">$1<\/a>');
    };
    defaultUsernameDecorator = function(text, options) {
        // the regex to markup @usernames. if @Anywhere is present the task is left to
        // them
        return isAnywherePresent() ? text : text.replace(/@([a-zA-Z0-9_]+)/gi, '@<a href="http://twitter.com/$1" class="jta-tweet-a twitter-anywhere-user" target="_blank" rel="nofollow">$1<\/a>');
    };
    defaultHashtagDecorator = function(text, options) {
        // the regex to markup #hashtags
        return text.replace(/#([a-zA-Z0-9_]+)/gi, '<a href="http://search.twitter.com/search?q=%23$1" class="jta-tweet-a jta-tweet-hashtag" title="#$1" target="_blank" rel="nofollow">#$1<\/a>');
    };
    defaultLoadingDecorator = function(options) {
        // the default loading decorator simply says: loading ...
        return '<li class="jta-loading">loading ...</li>';
    };
    defaultErrorDecorator = function(errorText, options) {
        // the default error decorator shows the error message
        return '<li class="jta-error">ERROR: ' + errorText + '</li>';
    };
    defaultNoDataDecorator = function(options) {
        // the default no-data decorator simply says: No more data
        return '<li class="jta-nodata">No more data</li>';
    };

    defaultTweetFilter = function(tweet, options) {
        var tweettext = tweet.text;
        tweettext = tweettext.toLowerCase();
        var filterWords = ["@zz", "@ss", "ass", "abort", "abortion", "kill", "terrorism", "bastard", "asshole", "bitch", "bullshit", "cabron", "cunt", "dumbass", "dick", "dildo", "fag", "fagget", "faggot", "fcuk", "afuck", "fuuuck", "fuuuuck", "fuuuuuck", "fock", "jackass", "jizz", "kickass", "masturbate", "motherfucker", "nigga", "nigger", "niggah", "piss", "pussy", "shit", "sh!t", "sh1t", "tits", "titty", "twat", "Whore", "Slut", "Viagra","Sex","sex", "C!alis", "MILF", "Boner", "Fucker", "Mofo", "Muthafucka", "Douche","Fuck"];
        // "i" is to ignore case
        var rgx = new RegExp(filterWords.join("\\b|\\b"), "gi");
        return !rgx.test(tweettext);

    };

    defaultTweetVisualizer = function(tweetFeedElement, tweetElement, inserter, options) {
        // insert (append/prepend) the tweetElement to the tweetFeedElement
        tweetFeedElement[inserter](tweetElement);
    };
    defaultLoadingIndicatorVisualizer = function(tweetFeedElement, loadingIndicatorElement, options, callback) {
        defaultVisualizer(tweetFeedElement, loadingIndicatorElement, 'append', 'fadeIn', 600, 'fadeOut', 200, callback);
    };
    defaultAutorefreshTriggerVisualizer = function(tweetFeedElement, triggerElement, options, callback) {
        defaultVisualizer(tweetFeedElement, triggerElement, 'prepend', 'slideDown', 600, 'fadeOut', 200, callback);
    };
    defaultVisualizer = function(container, element, inserter, effectIn, durationIn, effectOut, durationOut, callback) {
        // if param container is null element has to be removed from
        // the DOM, else element has to be inserted in container

        // if param callback is not null, the callback function must be called
        // in any case, if the visualizer is done

        var cb = function() {
            if (callback) {
                callback();
            }
        };

        if (container) {
            element.hide();
            container[inserter](element);
            element[effectIn](durationIn, cb);
        }
        else {
            element[effectOut](durationOut, function() {
                element.remove();
                cb();
            });
        }
    };

    defaultOnDataRequestHandler = function(stats, options) {
        return true;
    };
    defaultOnRateLimitDataHandler = function(stats, options) {
    };

    updateLoginInfoElement = function(options, T) {
        // update the content of the LoginInfo element
        if (options._loginInfoElement && options.loginInfoContentDecorator) {
            options._loginInfoElement.children().remove();
            options._loginInfoElement.append(options.loginInfoContentDecorator(options, T));
            $(options._baseSelector + ' .jta-login-info-sign-out').bind('click', function() {
                twttr.anywhere.signOut();
            });
        }
    };
    getFeedUrl = function(options, flPaging) {
        // create the Twitter API URL based on the configuration options
        var url = ('https:' == document.location.protocol ? 'https:' : 'http:');

        if (options.searchParams) {
            url += '//search.twitter.com/search.json?' +
				((options.searchParams instanceof Array) ? options.searchParams.join('&') : options.searchParams) +
				'&rpp=100';
        }
        else if (options.list) {
            url += '//api.twitter.com/1/' + options.username + '/lists/' + options.list + '/statuses.json?per_page=20';
        }
        else {
            url += '//api.twitter.com/1/statuses/user_timeline.json?screen_name=' + options.username + '&count=20';
            if (options._tweetFeedConfig.includeRetweets)
                url += '&include_rts=true';
        }

        if (flPaging) {
            url +=
				(options._tweetFeedConfig._maxId ? '&max_id=' + options._tweetFeedConfig._maxId : '') +
				'&page=' + options._tweetFeedConfig._pageParam;
        }

        url += '&callback=?';

        return url;
    };
    isAnywherePresent = function() {
        // check, if @Anywhere is present
        return typeof (twttr) != 'undefined';
    };
    clearTweetFeed = function(options) {
        if (options._tweetFeedElement) {
            options._tweetFeedElement.empty();
        }
    };
    populateTweetFeed = function(options) {
        // if a tweet feed is to be displayed, get the tweets and show them
        if (options.tweetDecorator && options._tweetFeedElement) {
            getPagedTweets(options, function(tweets, options) {
                if (options._tweetFeedConfig._clearBeforePopulate) {
                    clearTweetFeed(options);
                }

                hideLoadingIndicator(options, function() {
                    // process the tweets
                    $.each(tweets, function(idx, tweet) {
                        // decorate the tweet and give it to the tweet visualizer
                        options.tweetVisualizer(
							options._tweetFeedElement,
							$(options.tweetDecorator(tweet, options)),
							'append',
							options
						);
                    });

                    if (options._tweetFeedConfig._noData && options.noDataDecorator && !options._tweetFeedConfig._noDataElement) {
                        options._tweetFeedConfig._noDataElement = $(options.noDataDecorator(options));
                        options._tweetFeedElement.append(options._tweetFeedConfig._noDataElement);
                    }

                    if (options._tweetFeedConfig._clearBeforePopulate) {
                        options._tweetFeedElement.scrollTop(0);
                    }

                    addHovercards(options);
                });
            });
        }
    };
    populateTweetFeed2 = function(options) {
        if (options._tweetFeedElement && options._autorefreshTweetsCache.length > 0) {
            if (options._tweetFeedConfig.autorefresh.mode == 'trigger-insert') {
                if (options._tweetFeedConfig.autorefresh._triggerElement) {
                    if (options.tweetFeedAutorefreshTriggerContentDecorator) {
                        options._tweetFeedConfig.autorefresh._triggerElement.html(
							options.tweetFeedAutorefreshTriggerContentDecorator(options._autorefreshTweetsCache.length, options)
						);
                    }
                }
                else {
                    if (options.tweetFeedAutorefreshTriggerDecorator) {
                        options._tweetFeedConfig.autorefresh._triggerElement =
							$(options.tweetFeedAutorefreshTriggerDecorator(options._autorefreshTweetsCache.length, options));
                        options._tweetFeedConfig.autorefresh._triggerElement.bind('click', function() {
                            options.autorefreshTriggerVisualizer(
								null,
								options._tweetFeedConfig.autorefresh._triggerElement,
								options,
								function() {
								    insertTriggerTweets(options);
								}
							);
                            options._tweetFeedConfig.autorefresh._triggerElement = null;
                        });

                        options.autorefreshTriggerVisualizer(options._tweetFeedElement, options._tweetFeedConfig.autorefresh._triggerElement, options);
                    }
                }
            }
            else {
                insertTriggerTweets(options);
            }
        }
    };
    insertTriggerTweets = function(options) {
        // populate the tweet feed with tweets from the autorefresh cache
        if (options.tweetDecorator && options._autorefreshTweetsCache.length > 0) {
            // process the autorefresh cache
            while (options._autorefreshTweetsCache.length > 0) {
                // get the last tweet and remove it from the autorefresh cache
                var tweet = options._autorefreshTweetsCache.pop();

                // put that tweet on top of the tweets cache
                options._tweetsCache.unshift(tweet);

                // adjust paging offset
                options._tweetFeedConfig.paging._offset++;

                // decorate the tweet and give it to the tweet visualizer
                options.tweetVisualizer(
					options._tweetFeedElement,
					$(options.tweetDecorator(tweet, options)),
					'prepend',
					options
				);
            }

            addHovercards(options);
        }
    };
    addHovercards = function(options) {
        if (isAnywherePresent()) {
            // if @Anywhere is present, append Hovercards to @username and
            // profile images
            twttr.anywhere(function(T) {
                T(options._baseSelector + ' .jta-tweet-list').hovercards({ expanded: options._tweetFeedConfig.expandHovercards });
                T(options._baseSelector + ' .jta-tweet-profile-image img').hovercards(
				{
				    expanded: options._tweetFeedConfig.expandHovercards,
				    username: function(node) { return node.alt; }
				});
                T(options._baseSelector + ' .jta-tweet-retweeter-link').hovercards(
				{
				    expanded: options._tweetFeedConfig.expandHovercards,
				    username: function(node) { return node.text; }
				});
                T(options._baseSelector + ' .jta-tweet-user-screen-name-link').hovercards(
				{
				    expanded: options._tweetFeedConfig.expandHovercards,
				    username: function(node) { return node.text; }
				});
                T(options._baseSelector + ' .jta-tweet-user-full-name-link').hovercards(
				{
				    expanded: options._tweetFeedConfig.expandHovercards,
				    username: function(node) { return node.name; }
				});
            });
        }
    };
    populateAnywhereControls = function(options) {
        if (isAnywherePresent()) {
            twttr.anywhere(function(T) {
                // optionally add an @Anywhere TweetBox
                if (options.tweetBoxDecorator) {
                    T(options._baseSelector + ' .jta-tweet-box').tweetBox(options._tweetBoxConfig);
                }

                // optionally add an @Anywhere FollowButton
                if (options.followButtonDecorator) {
                    T(options._baseSelector + ' .jta-follow-button').followButton(options.username);
                }

                // optionally add an @Anywhere ConnectButton
                if (options.connectButtonDecorator) {
                    var o = $.extend(
					{
					    authComplete: function(user) {
					        // display/update login infos on connect/signin event
					        updateLoginInfoElement(options, T);
					    },
					    signOut: function() {
					        // display/update login infos on signout event
					        updateLoginInfoElement(options, T);
					    }
					}, options._connectButtonConfig);

                    T(options._baseSelector + ' .jta-connect-button').connectButton(o);

                    // display/update login infos
                    updateLoginInfoElement(options, T);
                }
            });
        }
    };
    bindEventHandlers = function(options) {
        if (options.tweetFeedControlsDecorator) {
            if (options._tweetFeedConfig.paging.mode == 'prev-next') {
                $(options._baseSelector + ' .jta-tweet-list-controls-button-prev').bind('click', function() {
                    if (!isLoading(options) && options._tweetFeedConfig.paging._offset > 0) {
                        prevPage(options, true);
                    }
                });
                $(options._baseSelector + ' .jta-tweet-list-controls-button-next').bind('click', function() {
                    if (!isLoading(options)) {
                        nextPage(options, true);
                    }
                });
            }
            else if (options._tweetFeedConfig.paging.mode == 'endless-scroll') {
                options._tweetFeedElement.bind("scroll", function() {
                    if (!isLoading(options) && ($(this)[0].scrollHeight - $(this).scrollTop() == $(this).outerHeight())) {
                        nextPage(options, false);
                    }
                });
            }
            else {
                $(options._baseSelector + ' .jta-tweet-list-controls-button-more').bind('click', function() {
                    if (!isLoading(options)) {
                        nextPage(options, false);
                    }
                });
            }
        }
    };
    nextPage = function(options, flClear) {
        doPage(options, flClear, Math.min(options._tweetFeedConfig.paging._offset + options._tweetFeedConfig.paging._limit, options._tweetsCache.length));
    };
    prevPage = function(options, flClear) {
        doPage(options, flClear, Math.max(0, options._tweetFeedConfig.paging._offset - options._tweetFeedConfig.paging._limit));
    };
    doPage = function(options, flClear, newOffset) {
        options._tweetFeedConfig.paging._offset = newOffset;
        options._tweetFeedConfig._clearBeforePopulate = flClear;

        populateTweetFeed(options);
    };
    startAutorefresh = function(options) {
        if (options._tweetFeedConfig.autorefresh.mode != 'none' &&
			options._tweetFeedConfig.paging.mode != 'prev-next' &&
			options._tweetFeedConfig.autorefresh.duration != 0 &&
			(
				options._tweetFeedConfig.autorefresh.duration < 0 ||
				(new Date().getTime() - options._tweetFeedConfig.autorefresh._startTime) <= options._tweetFeedConfig.autorefresh.duration * 1000
			)
		) {
            window.setTimeout(function() { processAutorefresh(options); }, options._tweetFeedConfig.autorefresh.interval * 1000);
        }
    };
    stopAutorefresh = function(options) {
        options._tweetFeedConfig.autorefresh.duration = 0;
    };
    processAutorefresh = function(options) {
        if (options._tweetFeedConfig.autorefresh.duration != 0) {
            // load the data ...
            getRateLimitedData(options, true, getFeedUrl(options, false), function(data, options) {
                // reverse the sequence of the autorefresh tweets ...
                var tweets = (data.results || data).slice(0);
                tweets.reverse();

                // ...then process them
                $.each(tweets, function(idx, tweet) {
                    // if this tweet is already in the standard tweets cache, ignore
                    if (!isTweetInCache(tweet, options)) {
                        // optionally filter tweet ...
                        if (options.tweetFilter(tweet, options)) {
                            // ... then put it to the top of the autorefresh cache
                            options._autorefreshTweetsCache.unshift(tweet);
                        }
                    }
                });

                populateTweetFeed2(options);
            });

            // restart autorefresh
            startAutorefresh(options);
        }
    };
    startTimestampRefresh = function(options) {
        if (
			options.tweetTimestampDecorator &&
			typeof (options._tweetFeedConfig.showTimestamp) == 'object' &&
			options._tweetFeedConfig.showTimestamp.refreshInterval > 0
		) {
            window.setTimeout(function() { processTimestampRefresh(options); }, options._tweetFeedConfig.showTimestamp.refreshInterval * 1000);
        }
    };
    processTimestampRefresh = function(options) {
        $.each(options._tweetFeedElement.find('.jta-tweet-timestamp-link'), function(idx, element) {
            var dataTimestamp = $(element).attr('data-timestamp');

            $(element).html(options.tweetTimestampFormatter(dataTimestamp));
        });

        startTimestampRefresh(options);
    };
    isTweetInCache = function(tweet, options) {
        var l = options._tweetsCache.length;

        for (var i = 0; i < l; i++) {
            if (tweet.id == options._tweetsCache[i].id) {
                return true;
            }
        }

        return false;
    };
    showLoadingIndicator = function(options) {
        if (options._tweetFeedElement && options.loadingDecorator && !options._loadingIndicatorElement) {
            options._loadingIndicatorElement = $(options.loadingDecorator(options));
            options.loadingIndicatorVisualizer(options._tweetFeedElement, options._loadingIndicatorElement, options, null);
            options._tweetFeedElement.scrollTop(1000000);
        }
    };
    hideLoadingIndicator = function(options, callback) {
        if (options._loadingIndicatorElement) {
            options.loadingIndicatorVisualizer(null, options._loadingIndicatorElement, options, callback);
            options._loadingIndicatorElement = null;
        }
        else {
            if (callback) {
                callback();
            }
        }
    };
    isLoading = function(options) {
        return options._loadingIndicatorElement != null;
    };
    formatDate = function(dateStr) {
        return dateStr.replace(/^([a-z]{3})( [a-z]{3} \d\d?)(.*)( \d{4})$/i, '$1,$2$4$3');
    };
    validateRange = function(num, lo, hi) {
        if (num < lo)
            num = lo;

        if (num > hi)
            num = hi;

        return num;
    };
    showError = function(options, errorText) {
        if (options.errorDecorator && options._tweetFeedElement) {
            options._tweetFeedElement.append(options.errorDecorator(errorText, options));
        }
    };
    getPagedTweets = function(options, callback) {
        options._tweetFeedConfig._recLevel = 0;

        getRecPagedTweets(options, options._tweetFeedConfig.paging._offset, options._tweetFeedConfig.paging._limit, callback);
    };
    getRecPagedTweets = function(options, offset, limit, callback) {
        ++options._tweetFeedConfig._recLevel;

        if (offset + limit <= options._tweetsCache.length ||
    		options._tweetFeedConfig._recLevel > 3 ||
    		options._tweetFeedConfig._noData
    	) {
            // if the requested data is already cached or the max. no. of
            // consecutive API calls is reached, use the records

            if (offset + limit > options._tweetsCache.length) {
                limit = Math.max(0, options._tweetsCache.length - offset);
            }

            var tweets = [];

            for (var i = 0; i < limit; i++) {
                tweets[i] = options._tweetsCache[offset + i];
            }

            callback(tweets, options);
        }
        else {
            // ... if not, load the data, fill the cache and try again
            ++options._tweetFeedConfig._pageParam;

            getRateLimitedData(options, false, getFeedUrl(options, true), function(data, options) {
                var tweets = data.results || data;

                if (tweets.length == 0) {
                    options._tweetFeedConfig._noData = true;
                }
                else {
                    $.each(tweets, function(idx, tweet) {
                        // Snowflake support: just update ids that are currently used
                        if (tweet.id_str) { tweet.id = tweet.id_str; }
                        if (tweet.in_reply_to_status_id_str) { tweet.in_reply_to_status_id = tweet.in_reply_to_status_id_str; }

                        // save the first tweet id for subsequent paging requests
                        if (!options._tweetFeedConfig._maxId) {
                            options._tweetFeedConfig._maxId = tweet.id;
                        }

                        // optionally filter tweet ...
                        if (options.tweetFilter(tweet, options)) {
                            // then put it into the cache
                            options._tweetsCache.push(tweet);
                        }
                    });
                }

                getRecPagedTweets(options, offset, limit, callback);
            });
        }
    };
    getRateLimitedData = function(options, flAutorefresh, url, callback) {
        getRateLimit(options, function(rateLimit) {
            if (rateLimit && rateLimit.remaining_hits <= 0) {
                options._stats.rateLimitPreventionCount++;
                hideLoadingIndicator(options, null);
                return;
            }

            getData(options, flAutorefresh, url, callback);
        });
    };
    getData = function(options, flAutorefresh, url, callback) {
        options._stats.dataRequestCount++;

        if (!options.onDataRequestHandler(options._stats, options)) {
            hideLoadingIndicator(options, null);
            return;
        }

        if (!flAutorefresh) {
            showLoadingIndicator(options);
        }

        $.getJSON(url, function(data) {
            if (data.error) {
                // in case of an error, display the error message
                showError(options, data.error);
            }
            else {
                callback(data, options);
            }
        });
    };
    getRateLimit = function(options, callback) {
        $.getJSON("http://api.twitter.com/1/account/rate_limit_status.json?callback=?", function(rateLimit) {
            options._stats.rateLimit = rateLimit;

            options.onRateLimitDataHandler(options._stats, options);

            callback(rateLimit);
        });
    };
})(jQuery);