bind.js

function bind(targetFunction, thisArg){
	"use strict";
	var boundArgs = Array.prototype.slice.call(arguments, 2);
	try{
		return Function.prototype.bind.apply(targetFunction, [thisArg].concat(boundArgs));
	}catch(e){
		function boundFunction(){
			return targetFunction.apply(thisArg, boundArgs.concat(arguments));
		}
		boundFunction.toString = function toString(){ return targetFunction.toString(); };
		Object.defineProperties(boundFunction, { 'toString':{ enumerable:false } });
		return boundFunction;
	}
}