typed.js

function Typed()
{
    self = this;

    self.delay = 50;
    self.pos = 1;
    self.text = "";

    function init(elem, delay) {
        self.delay = delay;
        self.text = $(elem).html();
    }

    this.type = function(elem, delay)
    {
        if(self.text == "") init(elem, delay);
        if(self.pos > self.text.length) return true;
        $(elem).html(self.text.substr(0, self.pos));
        self.pos++;
        window.setTimeout(function() {
            self.type(elem, self.delay);
        }, self.delay);
    }
}