$(document).ready(function() {
    if ($('#carousel_ul li').length > 1) {

        $('#carousel_ul li').clone().appendTo($('#carousel_ul'));

        var items = $('#carousel_ul li').length
        var offset;

        //offset = (items / 2) * 871.6666667;
        offset = (items / 2) * 919.5;

        //$('#main').prepend(items);
        $('#carousel_ul').css('left', -offset);

    }
    else if ($('#carousel_ul li').length == 1) {

        $('#carousel_ul').css('left', '0');
        $('.carousel_nav').hide();
    }

    //when user clicks the image for sliding right
    $('#right_scroll').click(function() {

        //get the width of the items ( i like making the jquery part dynamic, so if you change the width in the css you won't have o change it here too ) '
        var item_width = $('#carousel_ul li').outerWidth() //+ 10;

        //calculate the new left indent of the unordered list
        var left_indent = parseInt($('#carousel_ul').css('left')) - 940;

        //make the sliding effect using jquery's anumate function '
        $('#carousel_ul:not(:animated)').animate({'left': left_indent}, 1000, 'easeOutExpo', function() {

            //get the first list item and put it after the last list item (that's how the infinite effects is made) '
            $('#carousel_ul li:last').after($('#carousel_ul li:first'));

            //and get the left indent to the default
            $('#carousel_ul').css({
                'left': left_indent + 940
            });
        });
    });

    //when user clicks the image for sliding left
    $('#left_scroll').click(function() {

        var item_width = $('#carousel_ul li').outerWidth() //+ 10;

        /* same as for sliding right except that it's current left indent + the item width (for the sliding right it's - item_width) */
        var left_indent = parseInt($('#carousel_ul').css('left')) + 940;

        $('#carousel_ul:not(:animated)').animate({'left': left_indent}, 1000, 'easeOutExpo', function() {

            /* when sliding to left we are moving the last item before the first list item */
            $('#carousel_ul li:first').before($('#carousel_ul li:last'));

            //and again, when we make that change we are setting the left indent of our unordered list to the default
            $('#carousel_ul').css({
                'left': left_indent - 940
            });

        });


    });
    
    $("#contactForm").validate();
    
    function scroll_() {
        if ($('#carousel_ul li').length > 1) {
            $("#right_scroll").click();
        }
    }
    var itvl = null;

    itvl = window.setInterval(function(){scroll_()},4000);
    
    $('#carousel_ul li').each(function(){
        $(this).hover(function() {
            window.clearInterval(itvl);
            $(this).find('.caption').animate({bottom:0},'slow', 'easeOutExpo');
        }, function() {
            itvl = window.setInterval(function(){scroll_()},4000);
            $(this).find('.caption').animate({bottom:-122},'slow', 'easeOutExpo');
        });
    });
    



    $('#links a.contact').click(function(){
        $('article.content').toggle();
        $('article.form').toggle();
        var $link = $(this);
        if ($link.text() == 'Get in touch') {
            $link.text('Home');
        }else {
            $link.text('Get in touch');
        }
        return false;
    });

});