EXHIBIT 3

                            POWER OF ATTORNEY

     Power of Attorney, dated as of February 4, 2000 for Waddell & Reed
Financial Services, Inc. filed as Exhibit 3 to the Waddell & Reed Financial,
Inc. 13G filed for Rambus Inc. on July 7, 2000, Accession Number
0000912057-00-031086 and incorporated herein by reference.

     Power of Attorney, dated as of February 4, 2000 for Waddell & Reed, Inc.
filed as Exhibit 3 to the Waddell & Reed Financial, Inc. 13G filed for Rambus
Inc. on July 7, 2000, Accession Number 0000912057-00-031086 and incorporated
herein by reference.

     Power of Attorney, dated as of February 4, 2000 for Waddell & Reed
Investment Management Company Financial Services, Inc. filed as Exhibit 3 to
the Waddell & Reed Financial, Inc. 13G filed for Rambus Inc. on July 7, 2000,
Accession Number 0000912057-00-031086 and incorporated herein by reference.