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/A
filed for Dendrite International, Inc. on January 16, 2002, Accession Number
0000912057-02-001504 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/A filed for Dendrite
International, Inc. on January 16, 2002, Accession Number
0000912057-02-001504 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/A filed for Dendrite International, Inc. on January 16, 2002, Accession
Number 0000912057-02-001504 and incorporated herein by reference.