Pad //JavaScript Function (See related posts)

var s = "Jonas";
document.write(
  s, " => ", s.pad(20, "[]", 0), "<br />",
  s, " => ", s.pad(20, "[====]", 1), "<br />",
  s, " => ", s.pad(20, "~", 2)
);

//+ Jonas Raoni Soares Silva
//@ http://jsfromhell.com/string/pad [v1.0]

String.prototype.pad = function(l, s, t){
	return s || (s = " "), (l -= this.length) > 0 ? (s = new Array(Math.ceil(l / s.length)
		+ 1).join(s)).substr(0, t = !t ? l : t == 1 ? 0 : Math.ceil(l / 2))
		+ this + s.substr(0, l - t) : this;
};