// when the DOM is ready...
$(document).ready(function () {

  $("ul.navigation li").bind("mouseenter mouseleave", function(e){
    $(this).toggleClass("hover");
  });

  var $panels = $('#slider .scrollContainer > div');
  var $container = $('#slider .scrollContainer');

  // if false, we'll float all the panels left and fix the width 
  // of the container
  var horizontal = true;

  // float the panels left if we're going horizontal
  if (horizontal) {
    $panels.css({
      'float' : 'left',
      'position' : 'relative' // IE fix to ensure overflow is hidden
    });

    // calculate a new width for the container (so it holds all panels)
    $container.css('width', $panels[0].offsetWidth * $panels.length);
  }

  // collect the scroll object, at the same time apply the hidden overflow
  // to remove the default scrollbars that will appear
  var $scroll = $('#slider .scroll').css('overflow', 'hidden');

  // apply our left + right buttons
  $scroll
  .before('<img class="scrollButtons left" src="http://linkfarmevolution.com/img/left.png" />')
  .after('<img class="scrollButtons right" src="http://linkfarmevolution.com/img/right.png" />');

  // handle nav selection
  function selectNav() {
    $(this)
    .parents('ul:first')
    .find('li')
    .removeClass('selected')
    .end()
    .end()
    .addClass('selected');
  }

  $('#slider .navigation').find('li').click(selectNav);

  //go find the navigation link that has this target and select the nav
  function trigger(data) {
    var el = $('#slider .navigation').find('li.' + data.id + '').get(0);
    selectNav.call(el);
  }

  if (window.location.hash) {
    trigger({ id : window.location.hash.substr(1) });
  } else {
    $('ul.navigation li:first').click();
  }

  // offset is used to move to *exactly* the right place, since I'm using
  // padding on my example, I need to subtract the amount of padding to
  // the offset.  Try removing this to get a good idea of the effect
  var offset = parseInt((horizontal ? 
    $container.css('paddingTop') : 
    $container.css('paddingLeft')) 
    || 0) * -1;


    var scrollOptions = {
      target: $scroll, // the element that has the overflow

      // can be a selector which will be relative to the target
      items: $panels,

      navigation: '.navigation li',

      // selectors are NOT relative to document, i.e. make sure they're unique
      prev: 'img.left', 
      next: 'img.right',

      // allow the scroll effect to run both directions
      axis: 'xy',

      onAfter: trigger, // our final callback

      offset: offset,

      // duration of the sliding effect
      duration: 500,

      // easing - can be used with the easing plugin: 
      // http://gsgd.co.uk/sandbox/jquery/easing/
      easing: 'swing'
    };

    // apply serialScroll to the slider - we chose this plugin because it 
    // supports// the indexed next and previous scroll along with hooking 
    // in to our navigation.
    $('#slider').serialScroll(scrollOptions);

    // now apply localScroll to hook any other arbitrary links to trigger 
    // the effect
    $.localScroll(scrollOptions);

    // finally, if the URL has a hash, move the slider in to position, 
    // setting the duration to 1 because I don't want it to scroll in the
    // very first page load.  We don't always need this, but it ensures
    // the positioning is absolutely spot on when the pages loads.
    scrollOptions.duration = 1;
    $.localScroll.hash(scrollOptions);

  });