Cambiar el nombre a todas las propiedades de un JSON con JavaScript

	function addPrefix(prefix, source) {
	  if (Object.prototype.toString.call(source) === '[object Array]') {
		  var clone = [];
		  for (var i=0; i<source.length; i++) {
			  clone[i] = addPrefix(prefix, source[i]);
		  }
		  return clone;
	  } else if (typeof(source)=="object") {
		  var clone = {};
		  for (var prop in source) {
			  if (source.hasOwnProperty(prop)) {
				clone[prefix + prop] = addPrefix(prefix, source[prop]);
			  }
		  }
		  return clone;
	  } else {
		  return source;
	  }
	}
 
	var newJson = addPrefix("pref",{prop1:"hola",prop2:[{prop3:"miguel"}]});
	alert(JSON.stringify(newJson));