EXHIBIT 99.1 AGREEMENT OF JOINT FILING Bonanza Master Fund, Ltd., Bonanza Capital, Ltd. Bernay Box & Co., Inc. and Bernay Box agree that the Schedule 13G to which this Agreement is attached, and all future amendments to such Schedule 13G, shall be...

                                                                   Page 11 of 11

                                  EXHIBIT 99.1

                            AGREEMENT OF JOINT FILING

Bonanza Master Fund,  Ltd.,  Bonanza  Capital,  Ltd.  Bernay Box & Co., Inc. and
Bernay Box agree that the Schedule 13G to which this Agreement is attached,  and
all future  amendments to such Schedule 13G, shall be filed on behalf of each of
them.  This  Agreement  is intended to satisfy  the  requirements  of Rule 13d-l
(k)(l) under the Securities Exchange Act of 1934, as amended. This agreement may
be executed in any number of  counterparts,  each of which shall be deemed to be
in  original,  but all of  which  together  shall  constitute  one and the  same
instrument.

                              Date:  March  _____, 2004

                              BONANZA MASTER FUND, LTD., an exempted
                              company incorporated  in the Cayman Islands
                              with limited liability

                              By: /s/ Xxx Xxxxxxx
                                  ------------------
                              Name: Xxx Xxxxxxx
                              Title: Director

                              By: /s/ Xxxx Xxxxxxxxx
                                  ------------------
                              Name: Xxxx Xxxxxxxxx
                              Title: Director

                              BONANZA CAPITAL, LTD., a Texas limited partnership

                              By:  Bernay Box & Co., Inc., as General Partner

                              By: /s/ Bernay Box
                                  ------------------
                              Name: Bernay Box
                              Title: President

                              Bernay Box & Co., Inc., a Texas corporation

                              By: /s/ Bernay Box
                                  ------------------
                              Name: Bernay Box
                              Title: President

                              Bernay Box

                              By: /s/ Bernay Box
                                  ------------------
                              Name: Bernay Box