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

    function selectNav() {
 //alert ('nav '+this);
		$(this)
            .parents('ul:first')
                .find('li')
                    .removeClass('active_image')
                .end()
            .end()
            .parents('li:first')
            .addClass('active_image');
    }
	
    function trigger(data, sliderNum) {
        var el = $('slider1 .navigation').find('a[href$="' + data.id + '"]').get(0);
        selectNav.call(el);
    }


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

	//select all div '';
    var totalSliders = $('div').filter('div:first-child .h1_image_portfolio');
//	alert ('totalSliders '+totalSliders.size());

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

	var $panels = new Array();
	var $container = new Array();
	var $scroll = new Array();
	
	var i;
	for (i = 1; i <= totalSliders.size(); i++) {
		$panels[i] = $('#slider'+i+' .scrollContainer > div');
		$container[i] = $('#slider'+i+' .scrollContainer');


		// float the panels left if we're going horizontal
		if (horizontal) {
			$panels[i].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[i].css('width', $panels[i][0].offsetWidth * $panels[i].length + 6);/*mod "6" for IE6*/
		}

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

		// apply our left + right buttons
		//$scroll[i]
		//	.before('<img class="scrollButtons left" src="images/scroll_left.png" />')
		//	.after('<img class="scrollButtons right" src="images/scroll_right.png" />');

		// handle nav selection


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

		// go find the navigation link that has this target and select the nav


		// 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[i].css('paddingTop') : 
			$container[i].css('paddingLeft')) 
			|| 0) * -1;
    }

    function startSlider(scroll, panels, sliderNum) {
		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.
		$(sliderNum).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);
	}
	
	for (i = 1; i <= totalSliders.size(); i++) {
		startSlider ($scroll[i], $panels[i], '#slider'+i);
	}
	
}