javascript访问内部和外部作用域中同名的本地变量

给定以下javascript:

var someFunction = function(id) {
  //do some stuff
  var modifyId = function(id) {
     //do some stuff
     outer.id = id; //is there any way to modify the id variable in the outer scope from here?
  }
}

如何修改从内部函数范围传递到外部函数范围的ID?