// when the DOM is ready...
jQuery(document).ready(function () {
    var slider_exclude = 0;
    var $panels = jQuery('#slider .scrollContainer > div');
    var $container = jQuery('#slider .scrollContainer');
    var $scroll = jQuery('#slider .scroll').css('overflow', 'hidden');

    // 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) {
    	var newWidth = 0;
    	for(i=0;i<$panels.length;i++) {
    		newWidth += $panels[i].offsetWidth;
    	}

    	$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', newWidth);
    }

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

    function adjustHeight() {
	var parts = [];
	pos = jQuery(this).attr("href");
	if(pos && pos.indexOf("#") >= 0) {
	    parts = jQuery(this).attr("href").split("#");
	} else {
	    parts = ['panel1'];
	}
	if(parts.length >= 1) {
	    newHeight = jQuery('#' + parts[parts.length-1]).css('height','auto').outerHeight();
	    if(!newHeight) {
	        newHeight = 325;
	    }

	    newHeight = parseInt(newHeight)+25;
            if($scroll && $scroll.css('height') && $scroll.css('height') != newHeight) {
	        jQuery('#slider .scroll').animate({
                   height: "" + newHeight  +"px"
                });
            }
	}
    }
    jQuery('#slider .slidernavigation').find('a').click(selectNav);

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

    if (window.location.hash) {
        trigger({ id : window.location.hash.substr(1) });
    } else {
        jQuery('ul.slidernavigation 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: '.slidernavigation 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
	onBefore: adjustHeight,
        offset: 0,

        // duration of the sliding effect
        duration: 500,
        exclude: slider_exclude
    };

    // 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.
    jQuery('#slider').serialScroll(scrollOptions);

    // now apply localScroll to hook any other arbitrary links to trigger
    // the effect
    jQuery('ul.slidernavigation').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;
    jQuery.localScroll.hash(scrollOptions);
    adjustHeight();
});