function gup( name ){
	var regexS = "[\\?&]"+name+"=([^&#]*)";
	var regex = new RegExp ( regexS );
	var tmpURL = window.location.href;
	var results = regex.exec( tmpURL );
	if( results == null )
		return"";
	else
		return results[1];
}

$(document).ready(function () {
    var $panels = $('#historybox #widearea div.slide');
    var $container = $('#historybox #widearea');

    var horizontal = true;

    if (horizontal) {
        $panels.css({
            'float' : 'left',
            'position' : 'relative'
        });
        $container.css('width', $panels[0].offsetWidth * $panels.length);
    }

    var $scroll = $('#historybox #crop').css('overflow', 'hidden');
	if(gup('lang')=='en'){
		$("#historybox #crop").after('<a id="backbtn" href="#">Previous</a>');
		$("#historybox #crop").after('<a id="nextbtn" href="#">Next</a>');	

	}else{
		$("#historybox #crop").after('<a id="backbtn" href="#">Anterior</a>');
		$("#historybox #crop").after('<a id="nextbtn" href="#">Siguiente</a>');	
	}
	

    function selectNav() {
        $(this)
            .parents('ul:first')
                .find('a')
                    .removeClass('selected')
                .end()
            .end()
            .addClass('selected');
    }
	
    function trigger(data) {
        var el = $('#historybox .navigation').find('a[href$="' + data.id + '"]').get(0);
        selectNav.call(el);
    }

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

    var offset = parseInt((horizontal ? 
        $container.css('paddingTop') : 
        $container.css('paddingLeft')) 
        || 0) * -1;


    var scrollOptions = {
        target: $scroll, 
        items: $panels,
        navigation: '.navigation a',
		prev: 'a#backbtn', 
        next: 'a#nextbtn',
        axis: 'xy',
        onAfter: trigger,
        offset: offset,
        duration: 500,
        easing: 'swing'
    };

    $('#historybox').serialScroll(scrollOptions);

    $.localScroll(scrollOptions);

    scrollOptions.duration = 1;
    $.localScroll.hash(scrollOptions);

});