AS3 :: Flash - Extending Array Access Operators To 'wrap' Out-of-bound Index Values?

I'd really like to be able to make Flash's array access syntax 'wrap' over the array's bounds.

Lengthy explanation -

var array:Array = ['a','b','c','d','e','f'];

To keep things simple, the first index is 0, and its value is the first letter, 'a'. To get that value, we'd do this -

array[0]; // returns 'a'

As long as the index you're using to access the array is between 0 and array.length (6 in our example,) everything works fine - but if you use an index outside of those bounds, you're shut down.

array[-3];
array[9]; // both return 'undefined'

Sometimes that's a good thing - sometimes you expect that to happen, and you're fine with it. Other times, you find yourself wishing (or at least I find myself wishing) that it'd behave a bit more like this -

array[-3];
array[9]; // both return 'd'

(e.g. a photo gallery that jumps back to the beginning when you click 'next' on the last photo)There's a little chunk of code I use over and over for this sort of thing, but it's always to alter the index before passing it into the array:

var index = -3;
while(index < 0){index += array.length}
array[index % array.length]; // returns 'd'

... and that's fine, but what I really want to do is extend the Array object itself so that it'll automatically 'wrap' index values that go out of bounds.TL;DR - Is index-wrapping possible by extending Flash AS3's Array object?