<div class="bottom-nav ignore-select" id="bottom-nav">
        <div class="nav-load" id="nav-load">[next-link]Cargar mas...[/next-link]</div>
    
    <!-- aquí puede insertar navegación normal adicional -->
    
</div>

.bottom-nav {clear: both; padding-top: 60px;}
.nav-load {text-align: center;}
.nav-load a {padding: 0 60px; display: inline-block; height: 60px; line-height: 60px; border-radius: 30px;
font-weight: 700; font-size: 18px; background-color: #2980b9; color: #fff;}
.nav-load a:hover {background-color: #00a652; color: #fff;}
.nav-load span {display: none;}

$(document).ready(function(){
    
         $('body').on('click','#nav-load a',function(){
        var urlNext = $(this).attr('href');
        var scrollNext = $(this).offset().top - 200;
        if (urlNext !== undefined) {
            $.ajax({
                url: urlNext,
                beforeSend: function() {
                    ShowLoading('');
                },            
                success: function(data) {
                    $('#bottom-nav').remove();
                    $('#dle-content').append($('#dle-content', data).html());
                    $('#dle-content').after($('#bottom-nav'));
                    window.history.pushState("", "", urlNext);
                    $('html, body').animate({scrollTop:scrollNext}, 800);    
                    HideLoading('');
                },
                  error: function() {                
                    HideLoading('');
                    alert('что-то пошло не так');
                  }
            });
        };
        return false;
    });
    
});

Carga automática al desplazarse o Carga infinita

<div class="bottom-nav ignore-select" id="bottom-nav">
        <div class="nav-load" id="nav-load">[next-link]Cargar mas..[/next-link]</div>
    
</div>

.bottom-nav {clear: both; opacity:0;}

$(document).ready(function(){
    
    var loadLink = $('#nav-load'), loadStatus = 0;
    $(window).scroll (function () {
        if ($(this).scrollTop() + $(this).height() + 50 > loadLink.offset().top) {
            var urlNext = loadLink.find('a').attr('href');
            if (urlNext !== undefined && loadStatus == 0) {
                loadStatus = 1;
                $.ajax({
                    url: urlNext,
                    beforeSend: function() {
                        ShowLoading();
                    },            
                    success: function(data) {
                        $('#bottom-nav').remove();
                        $('#dle-content').append($('#dle-content', data).html()).after($('#bottom-nav'));
                        window.history.pushState("", "", urlNext);
                        HideLoading();
                        loadStatus = 0, loadLink = $('#nav-load');
                    }
                });
            } else {
                loadLink.remove();
            };
        };
    });  
    
});

  if ($(this).scrollTop() + $(this).height() + 50 > loadLink.offset().top) {