(function ($) {
    $.fn.scrollToTop = function (options) {
        var config = {
            "speed": 800
        };
        if (options) {
            $.extend(config, {
                "speed": options
            });
        }
        return this.each(function () {
            var $this = $(this);
            $(window).scroll(function () {
                if ($(this).scrollTop() > 100) {
                    $this.fadeIn();
                }
                else {
                    $this.fadeOut();
                }
            });
            $this.click(function (e) {
                e.preventDefault();
                $("body, html").animate({
                    scrollTop: 0
                }, config.speed);
            });
        });
    };
    //start
    $(function () {
        $("#scrolltop").scrollToTop();
    });
})(jQuery);
/*
 *  colourBrightness.js
 *
 *  Copyright 2013-2016, Jamie Brittain - http://jamiebrittain.com
 *  Released under the WTFPL license
 *  http://sam.zoy.org/wtfpl/
 *
 *  Github:  http://github.com/jamiebrittain/colourBrightness.js
 *  Version: 1.2
 */
(function ($) {
    $.fn.colourBrightness = function () {
        function getBackgroundColor($el) {
            var bgColor = "";
            while ($el[0].tagName.toLowerCase() != "html") {
                bgColor = $el.css("background-color");
                if (bgColor != "rgba(0, 0, 0, 0)" && bgColor != "transparent") {
                    break;
                }
                $el = $el.parent();
            }
            return bgColor;
        }
        var r, g, b, brightness
            , colour = getBackgroundColor(this);
        if (colour.match(/^rgb/)) {
            colour = colour.match(/rgba?\(([^)]+)\)/)[1];
            colour = colour.split(/ *, */).map(Number);
            r = colour[0];
            g = colour[1];
            b = colour[2];
        }
        else if ('#' == colour[0] && 7 == colour.length) {
            r = parseInt(colour.slice(1, 3), 16);
            g = parseInt(colour.slice(3, 5), 16);
            b = parseInt(colour.slice(5, 7), 16);
        }
        else if ('#' == colour[0] && 4 == colour.length) {
            r = parseInt(colour[1] + colour[1], 16);
            g = parseInt(colour[2] + colour[2], 16);
            b = parseInt(colour[3] + colour[3], 16);
        }
        brightness = (r * 299 + g * 587 + b * 114) / 1000;
        if (brightness < 125) {
            // white text
            this.removeClass("light").addClass("dark");
        }
        else {
            // black text
            this.removeClass("dark").addClass("light");
        }
        return this;
    };
    /*start
    $(document).ready(function(){
      if ($('.main-navigation ul ul').length > 0) { // check if element exists.
        $('.main-navigation ul ul').colourBrightness();
      }
      if ($('.site').length > 0) { // check if element exists.
        $('.site').colourBrightness();
      }
    });*/
})(jQuery);