javaScript

/**
 * Created by Hilde on 1-5-2015.
 */

    var main=function(){
        var $about_navigation=$('#aboutNav'),
            $goals_navigation=$('#goalsNav'),
            $service_navigation=$('#serviceNav'),
            $contact_navigation=$('#contactNav');

        $about_navigation.onclick(function () {
            $about_navigation.style.backgroundColor = "#F5F5F5";
            $goals_navigation.style.backgroundColor = "#778899";
            $service_navigation.style.backgroundColor = "#778899";
            $contact_navigation.style.backgroundColor = "#778899";
        });

    };

    $(document).ready(main);