$(function () {
    $(window).on("scroll", function () {
        var windowPosition = $(window).scrollTop();

        if(typeof(supportsMobile) != "undefined" && supportsMobile && isPhone()) {
           if ($("#lawLibraryNavigation").length && windowPosition + $(window).height() > $("#lawLibraryNavigation").offset().top + $("#lawLibraryNavigation").height()) {
                $("#backToTopContainer").addClass("backToTopStuck");
            }
            else if (windowPosition > 1000) {
                $("#backToTopContainer").removeClass("backToTopStuck");
                $("#backToTopContainer").css({ "display": "inline" });

            }
            else {
                $("#backToTopContainer").css({ "display": "none" });
            }
        }
        else{
            if ($("#lawLibraryNavigation").length && windowPosition + $(window).height() > $("#lawLibraryNavigation").offset().top) {
                $("#backToTopContainer").addClass("backToTopStuck");
            }
            else if (windowPosition > 1000) {
                $("#backToTopContainer").removeClass("backToTopStuck");
                $("#backToTopContainer").css({ "display": "inline" });

            }
            else {
                $("#backToTopContainer").css({ "display": "none" });
            }
        }
    })

    $("#backToTop").on("click", function () {
        window.scrollTo(0, 0);
    })

});