(function($){
 $.fn.ticker = function(options) {
 // Extend our default options with those provided.
 // Note that the first arg to extend is an empty object -
 // this is to keep from overriding our "defaults" object.
 var opts = $.extend({}, $.fn.ticker.defaults, options);

 /* Get the id of the UL to get our news content from */
 var newsID = '#' + $(this).attr('id');

 /* Get the tag type - we will check this later to makde sure it is a UL tag */
 var tagType = $(this).attr('tagName');

 return this.each(function() {
 /* Internal vars */
 var settings = {
 position: 0,
 time: 0,
 distance: 0,
 newsArr: {},
 play: true,
 paused: false,
 contentLoaded: false,
 dom: {
 contentID: '#ticker-content',
 titleID: '#ticker-title',
 titleElem: '#ticker-title SPAN',
 tickerID : '#ticker',
 wrapperID: '#ticker-wrapper',
 revealID: '#ticker-swipe',
 revealElem: '#ticker-swipe SPAN',
 controlsID: '#ticker-controls',
 prevID: '#prev',
 nextID: '#next',
 playPauseID: '#play-pause'
 }
 };

 // if we are not using a UL, display an error message and stop any further execution
 if (tagType != 'UL' && opts.htmlFeed === true) {
 debugError('Cannot use <' + tagType.toLowerCase() + '> type of element for this plugin - must of type <ul>');
 return false;
 }

 // lets go...
 initialisePage();
 /* Function to get the size of an Object*/
 function countSize(obj) {
 var size = 0, key;
 for (key in obj) {
 if (obj.hasOwnProperty(key)) size++;
 }
 return size;
 };
 /* Function for handling debug and error messages */
 function debugError(obj) {
 if (opts.debugMode) {
 if (window.console && window.console.log) {
 window.console.log(obj);
 }
 else {
 alert(obj);
 }
 }
 }
 /* Function to setup the page */
 function initialisePage() {
 // add our HTML structure for the ticker to the DOM
 $(settings.dom.wrapperID).append('<div id="' + settings.dom.tickerID.replace('#', '') + '"><div id="' + settings.dom.titleID.replace('#', '') + '"><span style="display: none;"><!-- --></span></div><p id="' + settings.dom.contentID.replace('#', '') + '"></p><div id="' + settings.dom.revealID.replace('#', '') + '"><span style="display: none;"><!-- --></span></div></div>');
 $(settings.dom.wrapperID).removeClass('no-js').addClass('has-js');
 // hide the ticker
 $(settings.dom.tickerElem + ',' + settings.dom.titleElem + ',' + settings.dom.contentID).hide();
 // add the controls to the DOM if required
 if (opts.controls) {
 // add related events - set functions to run on given event
 $(settings.dom.controlsID).live('click mouseover mousedown mouseout mouseup', function (e) {
 var button = e.target.id;
 if (e.type == 'click') {
 switch (button) {
 case settings.dom.prevID.replace('#', ''):
 // show previous item
 settings.paused = true;
 $(settings.dom.playPauseID).addClass('paused');
 changeContent(button);
 break;
 case settings.dom.nextID.replace('#', ''):
 // show next item
 settings.paused = true;
 $(settings.dom.playPauseID).addClass('paused');
 changeContent(button);
 break;
 case settings.dom.playPauseID.replace('#', ''):
 // play or pause the ticker
 if (settings.play == true) {
 settings.paused = true;
 $(settings.dom.playPauseID).addClass('paused');
 pauseTicker();
 }
 else {
 settings.paused = false;
 $(settings.dom.playPauseID).removeClass('paused');
 restartTicker();
 }
 break;
 }
 }
 else if (e.type == 'mouseover' && $('#' + button).hasClass('controls')) {
 $('#' + button).addClass('over');
 }
 else if (e.type == 'mousedown' && $('#' + button).hasClass('controls')) {
 $('#' + button).addClass('down');
 }
 else if (e.type == 'mouseup' && $('#' + button).hasClass('controls')) {
 $('#' + button).removeClass('down');
 }
 else if (e.type == 'mouseout' && $('#' + button).hasClass('controls')) {
 $('#' + button).removeClass('over');
 }
 });
 // add controls HTML to DOM
 $(settings.dom.wrapperID).append('<ul id="' + settings.dom.controlsID.replace('#', '') + '"><li id="' + settings.dom.playPauseID.replace('#', '') + '" class="controls"></li><li id="' + settings.dom.prevID.replace('#', '') + '" class="controls"></li><li id="' + settings.dom.nextID.replace('#', '') + '" class="controls"></li></ul>');
 }
 // add mouse over on the content
 $(settings.dom.contentID).mouseover(function () {
 if (settings.paused == false) {
 pauseTicker();
 }
 }).mouseout(function () {
 if (settings.paused == false) {
 restartTicker();
 }
 });
 // start the first ticker item
 updateTicker();
 }
 /* Start the ticker */
 function updateTicker() {
 // check to see if we need to load content
 if (settings.contentLoaded == false) {
 // construct content
 if (opts.ajaxFeed) {
 // to do - add ajax options (json, remote url)
 debugError('Code Me!');
 }
 else if (opts.htmlFeed) {
 if($(newsID + ' LI').length > 0) {
 $(newsID + ' LI').each(function (i) {
 // maybe this could be one whole object and not an array of objects?
 settings.newsArr['item-' + i] = { type: opts.titleText, content: $(this).html()};
 });
 }
 else {
 debugError('Couldn\'t find any content for the ticker to use!');
 return false;
 }
 }
 else {
 debugError('Couldn\'t find any content for the ticker to use!');
 return false;
 }
 settings.contentLoaded = true;
 }

 // insert news content into DOM
 $(settings.dom.titleElem).html(settings.newsArr['item-' + settings.position].type);
 $(settings.dom.contentID).html(settings.newsArr['item-' + settings.position].content);

 // set the next content item to be used - loop round if we are at the end of the content
 if (settings.position == (countSize(settings.newsArr) -1)) {
 settings.position = 0;
 }
 else {
 settings.position++;
 }

 // get the values of content and set the time of the reveal (so all reveals have the same speed regardless of content size)
 distance = $(settings.dom.contentID).width();
 time = distance / opts.speed;

 // start the ticker - have to fade both element here because of IE strangeness - needs further investigation
 $(settings.dom.wrapperID)
 .find(settings.dom.titleID).fadeIn()
 .end().find(settings.dom.titleElem).fadeIn('slow', revealContent);
 }

 //slide back cover
 function revealContent() {
 if(settings.play) {
 // get the width of the title element to offset the content and reveal
 var offset = $(settings.dom.titleElem).width();
 $(settings.dom.revealID).css('left', offset + 'px');
 // show the reveal element and start the animation
 $(settings.dom.revealElem).show(0, function () {
 $(settings.dom.contentID).css('left', offset + 'px').show();
 $(settings.dom.revealID).css('margin-left', '0px').delay(20).animate({
 marginLeft: distance + 'px'
 }, time, 'linear', postReveal);
 });
 }
 else {
 return false;
 }
 };

 function postReveal() {
 // here we hide the current content and reset the ticker elements to a default state ready for the next ticker item
 if(settings.play) {
 // we have to separately fade the content out here to get around an IE bug - needs further investigation
 $(settings.dom.contentID).delay(opts.pauseOnItems).fadeOut('slow');
 // deal with the rest of the content, prepare the DOM and trigger the next ticker
 $(settings.dom.revealID).hide(0, function () {
 $(settings.dom.tickerID).delay(opts.pauseOnItems).fadeOut(opts.fadeOutSpeed, function () {
 $(settings.dom.wrapperID)
 .find(settings.dom.titleElem +',' + settings.dom.revealElem + ',' + settings.dom.contentID)
 .hide()
 .end().find(settings.dom.tickerID + ',' + settings.dom.revealID + ',' + settings.dom.titleID)
 .show()
 .end().find(settings.dom.tickerID + ',' + settings.dom.revealID + ',' + settings.dom.titleID)
 .removeAttr('style');
 updateTicker();
 });
 });
 }
 else {
 $(settings.dom.revealElem).hide();
 }
 }

 function pauseTicker() {
 // pause ticker
 settings.play = false;
 // stop animation and show content - must pass true, true to the stop function, or we can get some funky behaviour
 $(settings.dom.tickerID + ',' + settings.dom.revealID + ',' + settings.dom.titleID + ',' + settings.dom.titleElem + ',' + settings.dom.revealElem + ',' + settings.dom.contentID).stop(true, true);
 $(settings.dom.revealID + ',' + settings.dom.revealElem).hide();
 $(settings.dom.wrapperID)
 .find(settings.dom.titleID + ',' + settings.dom.titleElem).show()
 .end().find(settings.dom.contentID).show();
 }

 function restartTicker() {
 // play ticker
 settings.play = true;
 settings.paused = false;
 // start the ticker again
 postReveal();
 }

 function changeContent(direction) {
 pauseTicker();
 switch (direction) {
 case 'prev':
 if (settings.position == 0) {
 settings.position = countSize(settings.newsArr) -2;
 }
 else if (settings.position == 1) {
 settings.position = countSize(settings.newsArr) -1;
 }
 else {
 settings.position = settings.position - 2;
 }
 //console.log(settings.position);
 $(settings.dom.titleElem).html(settings.newsArr['item-' + settings.position].type);
 $(settings.dom.contentID).html(settings.newsArr['item-' + settings.position].content);
 break;
 case 'next':
 $(settings.dom.titleElem).html(settings.newsArr['item-' + settings.position].type);
 $(settings.dom.contentID).html(settings.newsArr['item-' + settings.position].content);
 break;
 }
 // set the next content item to be used - loop round if we are at the end of the content
 if (settings.position == (countSize(settings.newsArr) -1)) {
 settings.position = 0;
 }
 else {
 settings.position++;
 }
 }
 });
 };
 // plugin defaults - added as a property on our plugin function
 $.fn.ticker.defaults = {
 speed: 0.10,
 ajaxFeed: false,
 htmlFeed: true,
 debugMode: true,
 controls: true,
 titleText: 'Latest',
 pauseOnItems: 2000,
 fadeInSpeed: 300,
 fadeOutSpeed: 300
 };
})(jQuery);

// get html from ajax call or json object

// make whole thing events based

// background customisation (a la bbc)