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

	 var hexagon_main = '#hexagon-icon-slider';
	 var hexagon_scroll = '#hexagon-icon-scroll';
	 var hexagon_scroll_inner = '#hexagon-icon-scroll-inner';
	 var button_next_id = 'hexagon-group-next';
	 var button_prev_id = 'hexagon-group-prev';
	 var button_next_src = '/img/scroll_right.png';
	 var button_prev_src = '/img/scroll_left.png';
	 var hexagon_navigation = '.hexagon-icon-navigation';

    var $panels = $(hexagon_scroll_inner + ' > div');
    var $container = $(hexagon_scroll_inner);

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

	 if ($container.size() > 0) {
	    // 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 = $(hexagon_scroll).css('overflow', 'hidden');

	    // apply our left + right buttons
	    $(hexagon_scroll)
	        .before('<span class="scroll_buttons" id="'+button_prev_id+'" > </span>')
	        .after('<span class="scroll_buttons" id="'+button_next_id+'" ></span>');
	
	    // handle nav selection
	    function selectNav() {
	        $(this)
	            .parents('ul:first')
	                .find('a')
	                    .removeClass('selected')
	                .end()
	            .end()
	            .addClass('selected');
	    }
	
	    $(hexagon_navigation).find('a').click(selectNav);
	
	    // go find the navigation link that has this target and select the nav
	    function trigger(data) {
	        var el = $(hexagon_navigation).find('a[href$="' + data.id + '"]').get(0);
	        selectNav.call(el);
	    }
	
	    if (window.location.hash) {
	        trigger({ id : window.location.hash.substr(1) });
	    } else {
	        $('ul.'+hexagon_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: hexagon_navigation+' a',
	
	        // selectors are NOT relative to document, i.e. make sure they're unique
	        prev: '#'+button_prev_id, 
	        next: '#'+button_next_id,
	
	        // allow the scroll effect to run both directions
	        axis: 'x',
	
	        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.
	    $(hexagon_main).serialScroll(scrollOptions);
	    
	    $('#'+button_prev_id).bind('mouseenter mouseleave', function(e){
	        $(this).toggleClass('scroll_buttons_hover');
	    });
	    $('#'+button_next_id).bind('mouseenter mouseleave', function(e){
	        $(this).toggleClass('scroll_buttons_hover');
	    });

	
	    // 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);
	}
	
});