land.js

$.fn.typewriter = function() {
  this.each(function() {
    var c = $(this),
      b = c.html(),
      a = 0,
      d = 0;
    c.html("");
    var e = function() {
      if ("<" == b.substring(a, a + 1)) {
        var f = new RegExp(/<span class="instant"/),
          g = new RegExp(/<span class="clear"/);
        if (b.substring(a, b.length).match(f)) a += b.substring(a, b.length).indexOf("</span>") + 7;
        else if (b.substring(a, b.length).match(g)) d = a, a += b.substring(a, b.length).indexOf("</span>") + 7;
        else
          for (;
            ">" != b.substring(a, a + 1);) a++
      }
      c.html(b.substring(d, a++) + (a & 1 ? "_" : ""));
      a >= b.length || setTimeout(e, 70 + 100 *
        Math.random())
    };
    e()
  });
  return this
};
$(".terminal").typewriter();