thecodingmachine / tdbm

var $ = jQuery;

$( document ).ready(function() {

    $('.scroll-contact').on('click',function () {

        var contact = $('.b-container');

        $('html,body').animate({scrollTop: contact.offset().top}, 1500);

    });

    var wi = $(window).width();

    if(wi <= 980){

        $('#header').removeClass('absolute');

    }

    $(window).scroll(function() {

        if($(window).scrollTop() > 0) {

            $('#header').addClass('fixed');

        }else{

            $('#header').removeClass('fixed');

        }

    });

    // browser window scroll (in pixels) after which the "back to top" link is shown

    var offset = 300,

        //browser window scroll (in pixels) after which the "back to top" link opacity is reduced

        offset_opacity = 1200,

        //duration of the top scrolling animation (in ms)

        scroll_top_duration = 700,

        //grab the "back to top" link

        $back_to_top = $('.cd-top');

    //hide or show the "back to top" link

    $(window).scroll(function(){

        ( $(this).scrollTop() > offset ) ? $back_to_top.addClass('cd-is-visible') : $back_to_top.removeClass('cd-is-visible cd-fade-out');

        if( $(this).scrollTop() > offset_opacity ) {

            $back_to_top.addClass('cd-fade-out');

        }

    });

    //smooth scroll to top

    $back_to_top.on('click', function(event){

        event.preventDefault();

        $('body,html').animate({

                scrollTop: 0 ,

            }, scroll_top_duration

        );

    });

});