var ios = false;
ios = ( $('html').hasClass('appleios') );

$(document).ready(function () {

    var $window = $(window);
    $('.block').css({ 'background-attachment': 'fixed' });

    $window.resize(function () {
        $('.block').height($window.height());
        var blocks = $('.block');
        $.each(blocks, function (i, block) {
            $('.up', $(block)).height($(block).height());
            $('.down', $(block)).height($(block).height());
            $('.copy', $(block)).css({
                'paddingTop': $(block).height() - 170
            });
            $('.up', $(block)).css({
                'backgroundPosition': newUpPos(block)
            });
            $(block).css({
                'backgroundPosition': newBackgroundPos(block)
            });
        });
    });

    function scrollHeader(scroll_to) {
        var should_scroll_header = false;
        var window_scroll_pos = $window.scrollTop();
        var scrolling_amount = scroll_to - window_scroll_pos;
        var scrolling_direction = "none";
        if (scrolling_amount < 0) {
            scrolling_direction = "up";
        } else if (scrolling_amount > 0) {
            scrolling_direction = "down";
        } else {
            scrolling_direction = "none";
        }
        if (ios) {
            scrolling_direction = "none";
        }
        switch (scrolling_direction) {
            case "up":
                should_scroll_header = false;
                break;
            case "down":
                should_scroll_header = true;
                break;
            case "none":
                should_scroll_header = false;
                break;
            default:
                should_scroll_header = false;
                break;
        }
        if (should_scroll_header) {
            $('#top').css({
                'position': 'absolute'
            });
            $('#top').css({
                'top': $window.scrollTop()
            });
        } else {
            $('#top').css({
                'position': 'fixed'
            });
            $('#top').css({
                'top': 0
            });
        }
        return should_scroll_header;
    }

    function newBackgroundPos(inview) {
        var window_scroll_pos = $window.scrollTop();
        var bottom_pos = $(inview).offset().top;
        var pos = 50;
        if (bottom_pos && window_scroll_pos) {
            pos = 50 * (window_scroll_pos / bottom_pos);
        } else {
            pos = 50 * ((window_scroll_pos + 1080) / 1080);
        }
        var css = "50% " + pos + "%";
        return css;
    }
    function newUpPos(inview) {
        var window_scroll_pos = $(window).scrollTop();
        var top_pos = $(inview).offset().top;
        var intertia = 5;
        var pos = 50;
        if (top_pos && window_scroll_pos) {
            pos = (50 * (Math.pow((((window_scroll_pos - top_pos) / $(inview).height()) + 1) * 0.5, intertia) / Math.pow(0.5, intertia)));
        }
        if (pos < 45) {
            pos = 45;
        }
        var css = "50% " + pos + "%";
        return css;
    }

    $('#anchors li a, #anchors2 li a, #anchors3 li a, #anchors4 li a, #anchors5 li a, #anchors6 li a').click(function (e) {
        e.preventDefault();
        var block = $(this).attr('href');
        var scroll_to = $(block).offset().top;
        var should_scroll_header = scrollHeader(scroll_to);
        var top_height = $('#top').height();
        var top_top = $('#top').css('top');
        $('html, body').stop().animate({
            scrollTop: scroll_to
        }, 2100, 'easeInOutExpo', function () {
            if (should_scroll_header && (top_top != $window.scrollTop() + "px")) {
                $('#top').css({
                    'top': $window.scrollTop() - top_height
                });
                $('#top').stop().animate({
                    'top': $(window).scrollTop()
                }, 1000, 'easeInOutExpo', function () {
                    $('#top').css({
                        'position': 'fixed'
                    });
                    $('#top').css({
                        'top': 0
                    });
                });
            }
        });
        clicky.log(block, 'Homepage Anchor Click');
    });


    if (!ios) {

        var imageArray = [""];
       
            $(document).smartpreload({ images: imageArray,
                oneachimageload: function (src) {
                    var index = $.inArray(src, imageArray) + 1;
                    $('#block_' + index).css({ "background-image": "url(" + src + ")" });
                    if (index === 1) {
                        $('#spinner').delay(500).fadeOut('slow', function () {
                            $('#spinner-wrapper').delay(500).fadeOut('slow', function () {
                                try { spinr.stop(); } catch (err) { }
                            });
                        });
                    }
                },
                onloadall: function () {
                }
            });
       
        $('.block').bind('inview', function (event, visible) {
            var id = $(this).attr('id');
            var anchor = "#" + id + "_btn";

            if (visible === true) {
                $(this).addClass("inview");
                $(anchor).addClass("inview");
            } else {
                $(this).removeClass("inview");
                $(anchor).removeClass("inview");
            }
        });

        $window.scroll(function () {
            $('#top').mouseleave();
            var inviews = $('.block.inview');
            $.each(inviews, function (i, inview) {
                var up = $('.up', inview);
                var copy = $('.copy', inview);
                var a = $('.copy a', inview);
                $(up).css({
                    'backgroundPosition': newUpPos(inview)
                });
                $(inview).css({
                    'backgroundPosition': newBackgroundPos(inview)
                });
            });
        });

        $window.resize();
    }

});