bind ES3

es3bind.js

Function.prototype.bind = Function.prototype.bind || function bind(thisArg) {
	var method = this;
	var args = Array.prototype.slice.call(arguments, 1);

	return function bound() {
		var _args = args.concat(Array.prototype.slice.call(arguments));
		if (!(this instanceof bound))
			return method.apply(thisArg, _args);

		var __args = [];
		for (var i = 0, len = _args.length; i < len; i++)
			__args.push('_args[' + i + ']');

		return eval('new method(' + __args.join(',') + ')');
	};
}

nice one