EXHIBIT 3

                              POWER OF ATTORNEY


Power of Attorney, dated as of January 7, 2002 for Waddell & Reed Financial
Services, Inc. filed as Exhibit 3 to the Waddell & Reed Financial, Inc. 13G
filed for Intermagnetics General Corporation on February 13, 2003, Accession
Number 0001047469-03-005394 and incorporated herein by reference.

Power of Attorney, dated as of January 7, 2002 for Waddell & Reed, Inc. filed
as Exhibit 3 to the Waddell & Reed Financial, Inc. 13G filed for
Intermagnetics General Corporation on February 13, 2003, Accession Number
0001047469-03-005394 and incorporated herein by reference.

Power of Attorney, dated as of January 7, 2002 for Waddell & Reed Investment
Management Company filed as Exhibit 3 to the Waddell & Reed Financial, Inc.
13G filed for Intermagnetics General Corporation on February 13, 2003,
Accession Number 0001047469-03-005394 and incorporated herein by reference.