EXHIBIT 99.1
AGREEMENT REGARDING JOINT FILING
--------------------------------
The undersigned, Xxxxxxxxx Group plc, Xxxxxxxxx Global Investors
(Holdings) plc and Xxxxxxxxx Global Investors Limited, hereby agree and
acknowledge that the statement containing the information required by Schedule
13G, to which this Agreement is attached as an exhibit, is filed on behalf of
each of them. The undersigned further agree that any amendments or supplements
thereto shall also be filed on behalf of each of them.
Dated: May 20, 2005
XXXXXXXXX GROUP PLC
By:/s/ Xxxxxx X'Xxxxx
--------------------------------------
Name: Xxxxxx X'Xxxxx
Title: Company Secretary
XXXXXXXXX GLOBAL INVESTORS (HOLDINGS) PLC
By:/s/ Xxxxxx X'Xxxxx
--------------------------------------
Name: Xxxxxx X'Xxxxx
Title: Company Secretary
XXXXXXXXX GLOBAL INVESTORS LIMITED
By:/s/ Xxxxxx X'Xxxxx
--------------------------------------
Name: Xxxxxx X'Xxxxx
Title: Company Secretary
