EX-99.1 2 0002.txt JOINT FILING AGREEMENT EXHIBIT 1 JOINT FILING AGREEMENT ---------------------- Pursuant to Rule 13d-1(k)(1)(iii), we the undersigned agree that the Schedule 13G, to which this Joint Filing Agreement is attached as Exhibit 1, is filed on behalf of each of us. Date: February 13, 2001 MAYFIELD VI INVESTMENT PARTNERS A California Limited Partnership By: /s/ James T. Beck -------------------------------------- James T. Beck, Authorized Signatory MAYFIELD VI MANAGEMENT PARTNERS A California Limited Partnership By: /s/ James T. Beck -------------------------------------- James T. Beck, Authorized Signatory MAYFIELD ASSOCIATES FUND A California Limited Partnership By: /s/ James T. Beck -------------------------------------- James T. Beck, Authorized Signatory F. GIBSON MYERS, JR. By: /s/ James T. Beck -------------------------------------- James T. Beck, Attorney In Fact KEVIN A. FONG By: /s/ James T. Beck -------------------------------------- James T. Beck, Attorney In Fact WILLIAM D. UNGER By: /s/ James T. Beck -------------------------------------- James T. Beck, Attorney In Fact WENDELL G. VAN AUKEN, III By: /s/ James T. Beck -------------------------------------- James T. Beck, Attorney In Fact Page 16 of 31 pages. MICHAEL J. LEVINTHAL By: /s/ James T. Beck ------------------------------------- James T. Beck, Attorney In Fact A. GRANT HEIDRICH, III By: /s/ James T. Beck ------------------------------------- James T. Beck, Attorney In Fact Page 17 of 31 pages.