bin2hex like php function

bin2hex.js

function bin2hex (s) {
	// From: http://phpjs.org/functions
	// +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
	// +   bugfixed by: Onno Marsman
	// +   bugfixed by: Linuxworld
	// +   improved by: ntoniazzi (http://phpjs.org/functions/bin2hex:361#comment_177616)
	// *     example 1: bin2hex('Kev');
	// *     returns 1: '4b6576'
	// *     example 2: bin2hex(String.fromCharCode(0x00));
	// *     returns 2: '00'

	var i, l, o = "", n;

	s += "";

	for (i = 0, l = s.length; i < l; i++) {
		n = s.charCodeAt(i).toString(16).toUpperCase();
		o += n.length < 2 ? "0" + n : n;
	}

	return o;
}