// 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('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="../../../images/scroll_left.gif" />')
  	.after('<img class="scrollButtons right" src="../../../images/scroll_right.gif" />');

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

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

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

	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 scrollOptions =
{
	target: $scroll, // the element that has the overflow
    // can be a selector which will be relative to the target
  	items: $panels,
  
  	navigation: '.navigation 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(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);

});