Querystring encoding of object

var serialize = function(obj, prefix) {
	// http://stackoverflow.com/questions/1714786/querystring-encoding-of-a-javascript-object
	var str = [];
	for(var p in obj) {
		var k = prefix ? prefix + "[" + p + "]" : p, v = obj[p];
		str.push(typeof v == "object" ? serialize(v, k) : encodeURIComponent(k) + "=" + encodeURIComponent(v));
  	}
	return str.join("&");
}