Return cell address from 2D lookup

[nlexcel]

I am trying to find a way to return the cell address for a given value in a range (multiple rows and columns).

For example, in the range A1:D5 are numbers 1 to 20, not in any particular order and no duplicate values.

15,5,1,11
14,16,4,2
13,6,20,18
9,3,12,8
10,19,7,17

I want (preferably a formula) to return the address of the cell that contains a given number (e.g. 12 would return C4 or 17 would return D5).

Is it possible?

[shg]

	a	b	c	d	e	f	g	h
1	15	5	1	11		12	c4	g1: =address(sumproduct(($a$1:$d$5=f1) * row($a$1:$d$5)), sumproduct((a1:d5=f1) * column($a$1:$d$5) ), 4)
2	14	16	4	2		17	d5
3	13	6	20	18
4	9	3	12	8
5	10	19	7	17

[nlexcel]

Freaking awesome! Thanks!

[shg]

You're welcome.