images.kingdomofloathing.com/scripts/matrix.20160606.js

jQuery(function ($) {
    var randit = function (l, h) {
        return l + Math.floor(Math.random() * (h-l));
    };
    var rchar = function () { return String.fromCharCode(randit(33,126)); };
    var bloobs = [];
    setInterval(function () {
        var b = $('<div></div>')
        b.css({
            width: '30px',
            position: 'fixed',
            top: '0%',
            textAlign:'center',
            left: randit(0,98) + '%',
            color: 'green',
        });
        b.html(rchar());
        b.animate({top: '100%', opacity: 0}, randit(1500, 5000), function () {
            $(this).remove();
        });
        bloobs.push(b);
        $('body').append(b);
    }, matrix_speed);
    setInterval(function () {
            var remove = [];
            for (var i=0; i<bloobs.length; i++) {
                    if (bloobs[i].parents().length == 0) remove.push(i);
                    else {
                        bloobs[i].html(rchar());
                    }
            }
            for (i=(remove.length-1); i>=0; i--) {
                bloobs.splice(remove[i], 1);
            }
    }, 500);
});