CODE EXAMPLE FOR JAVASCRIPT

footer bottom

<script>
    $(document).ready(function() {
        setInterval(function() {
            var docHeight = $(window).height();
            var footerHeight = $('#footer').height();
            var footerTop = $('#footer').position().top + footerHeight;
            var marginTop = (docHeight - footerTop + 10);

            if (footerTop < docHeight)
                $('#footer').css('margin-top', marginTop + 'px'); // padding of 30 on footer
            else
                $('#footer').css('margin-top', '0px');
            // console.log("docheight: " + docHeight + "
" + "footerheight: " + footerHeight + "
" + "footertop: " + footerTop + "
" + "new docheight: " + $(window).height() + "
" + "margintop: " + marginTop);
        }, 250);
    });
</script>