.navigation {position: fixed;bottom: 100px;right: 100px;z-index: 100;
}
.navigation {transition: bottom 2s;-webkit-transition: bottom 2s;
}

var nav = eval($('.navigation').offset().top - $(window).scrollTop());
$(window).on('scroll', function() {var navh = $('.navigation').height();var foot = parseInt($('.footer').offset().top - $(this).scrollTop() - navh);/*console.log(nav - foot);*/if(nav == foot || nav > foot) {$('.navigation').css({'position': 'fixed','bottom': '400px'});} else {$('.navigation').css({'position': 'fixed','bottom': '100px'});}
});