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

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('1000', $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="images/scroll_left.png" />')
  .after('<img class="scrollButtons right" src="images/scroll_right.png" />');
*/
// handle nav selection
function selectNav() {
  $(this)
    .parents('ul:first')
      .find('a')
        .removeClass('selected')
      .end()
    .end()
    .addClass('selected');
}

$('#slider .navigation1').find('a').click(selectNav);
$('#slider .navigation2').find('a').click(selectNav);
$('#slider .navigation3').find('a').click(selectNav);
$('#slider .navigation4').find('a').click(selectNav);

// go find the navigation link that has this target and select the nav
function trigger(data) {
  var el1 = $('#slider .navigation1').find('a[href$="' + data.id + '"]').get(0);  
  var el2 = $('#slider .navigation2').find('a[href$="' + data.id + '"]').get(0);
  var el3 = $('#slider .navigation3').find('a[href$="' + data.id + '"]').get(0);
  var el4 = $('#slider .navigation4').find('a[href$="' + data.id + '"]').get(0);  
  selectNav.call(el1);
  selectNav.call(el2);
  selectNav.call(el3);
  selectNav.call(el4);  
}

if (window.location.hash) {
  trigger({ id : window.location.hash.substr(1) });
} else {
  $('ul.navigation a: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 scrollOptions1 = {
  target: $scroll, // the element that has the overflow
  
  // can be a selector which will be relative to the target
  items: $panels,
  
  navigation: '.navigation1 a',
  
  // 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'
};


var scrollOptions2 = {
  target: $scroll, // the element that has the overflow
  
  // can be a selector which will be relative to the target
  items: $panels,
  
  navigation: '.navigation2 a',
  
  // 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'
};

var scrollOptions3 = {
  target: $scroll, // the element that has the overflow
  
  // can be a selector which will be relative to the target
  items: $panels,
  
  navigation: '.navigation3 a',
  
  // 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'
};

var scrollOptions4 = {
  target: $scroll, // the element that has the overflow
  
  // can be a selector which will be relative to the target
  items: $panels,
  
  navigation: '.navigation4 a',
  
  // 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(scrollOptions1);
$('#slider').serialScroll(scrollOptions2);
$('#slider').serialScroll(scrollOptions3);
$('#slider').serialScroll(scrollOptions4);

// now apply localScroll to hook any other arbitrary links to trigger 
// the effect
/*
$.localScroll(scrollOptions1);
$.localScroll(scrollOptions2);
$.localScroll(scrollOptions3);
$.localScroll(scrollOptions4);
*/

// 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.
scrollOptions1.duration = 1;
scrollOptions2.duration = 1;
scrollOptions3.duration = 1;
scrollOptions4.duration = 1;
/*
$.localScroll.hash(scrollOptions1);
$.localScroll.hash(scrollOptions2);
$.localScroll.hash(scrollOptions3);
$.localScroll.hash(scrollOptions4);
*/
});