(function($){

    // Body scroll css class
    var checkScrollTop = function(e){
        if($(document).scrollTop() >= 50){
            $('body').addClass('scrolled');
        }else{
            $('body').removeClass('scrolled');
        }
    };
    $(window).load(checkScrollTop);
    $(window).scroll(checkScrollTop);

    var headerHeight = 75;

    // Internal link smooth scroll
    $(document).ready(function(){

        $('a[href^="/#"]').click(function(e){
            e.preventDefault();

            var target = this.hash;
            var $target = $(target);

            // set scroll target in pixels
            var scrollTarget = $target.offset().top - headerHeight;

            // cap scroll target
            scrollTarget = scrollTarget < 0 ? 0 : scrollTarget;
            var maxScroll = $(document).height() - $(window).height();
            scrollTarget = scrollTarget > maxScroll ? maxScroll : scrollTarget;

            // scroll to target
            $('html, body').stop().animate({
                'scrollTop': scrollTarget
            }, 1500, 'easeOutQuint', function () {

                if(history.pushState) {
                    history.pushState(null, null, target);
                }else {
                    window.location.hash = target;
                }
            });
        });
    });

    // Menu highlights
    $(document).ready(function(){
        var elementLocations = {};

        var isMobile = function(){
            var check = false;
            (function(a){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino|android|ipad|playbook|silk/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4)))check = true})(navigator.userAgent||navigator.vendor||window.opera);
            return check;
        };

        var scrollEventHandler = function(event){
            var scrollPosition = $(window).scrollTop();
            var elementToHighLight = 'home';
            var elementToHighLightDelta = Infinity;
            for(var i in elementLocations)
            {
                var currentDelta = scrollPosition - elementLocations[i];
                if(currentDelta >= 0){
                    if(currentDelta <= elementToHighLightDelta){
                        elementToHighLightDelta = currentDelta;
                        elementToHighLight = i;
                    }
                }
                $('header .menu a[href="\/#'+i+'"]').parent().removeClass('active');
            }
            $('header .menu a[href="\/#'+elementToHighLight+'"]').parent().addClass('active');
        };

        $('header .menu a[href^="\/#"]').each(function(index, element){
            var id = $(element).attr('href');
            elementLocations[id.substr(2)] = $(id.substr(1)).offset().top - ($(window).height() / 2);
        });

        var checkIfElementsAreOnScreen = function(event){
            if($('#element').visible(true, true));
        };

        $(window).on('resize load scroll', scrollEventHandler);

        //$('body > section').jOnScreen();

        var stellarIsLoaded = false;
        var loadStellar = function(){
            if( !isMobile() ) {
                $.stellar({
                    horizontalScrolling: false,
                    verticalScrolling: true,
                    hideDistantElements: false,
                    responsive: false
                });
                stellarIsLoaded = true;
            }
        };

        if($(window).width() >= 800) {
            loadStellar();
        }

        var refreshStellar = function(){
            if(stellarIsLoaded) {
                $(window).data('plugin_stellar').destroy();
            }
            if($(window).width() >= 800){
                if(stellarIsLoaded) {
                    $(window).data('plugin_stellar').init();
                }else{
                    loadStellar();
                }
            }
        };
        $(window).on('resize load', refreshStellar);
        refreshStellar();

    });

})(jQuery);