AUDIT COMMITTEE CHARTER

A. Purpose
The Audit Committee shall be directly responsible for the appointment, compensation and oversight over the work of the Company's public accountants. The Audit Committee shall monitor (1) the integrity of the financial statements of the Company, (2) the Company's compliance with legal and regulatory requirements, (3) the public accountants' qualifications and independence and (4) the performance of the Company's internal audit function and public accountants. The Audit Committee shall oversee the preparation of and review, the report required by the rules of the Securities and Exchange Commission to be included in the Company's annual proxy statement.

B. Committee Membership
The Audit Committee shall consist of no fewer than three members. The composition of the Audit Committee shall satisfy the independence, experience and financial expertise requirements of the Nasdaq National Market, the Toronto Stock Exchange and Section 10A of the Securities Exchange Act of 1934, as amended by the Sarbanes-Oxley Act of 2002, and the rules promulgated thereunder. The Board shall appoint the members of the Audit Committee annually, considering the recommendation of the Nominations and Corporate Governance Committee, and further considering the views of the Chairman of the Board and the Chief Executive Officer, as appropriate. The members of the Audit Committee shall serve until their successors are appointed.

The Board shall have the power at any time to change the membership of the Audit Committee and to fill vacancies in it, subject to such new member(s) satisfying the independence, experience and financial expertise requirements referred to above. Except as expressly provided in this Charter or the by-laws of the Company, or as otherwise provided by law or the rules of the stock exchanges to which the Company is subject, the Audit Committee shall fix its own rules of procedure.

C. Committee Authority and Responsibilities
The Audit Committee shall have the sole authority to appoint or replace the public accountants (subject, if applicable, to shareholder ratification), and shall approve all audit engagement fees and terms and all non-audit engagements with the public accountants. The Audit Committee shall consult with management but shall not delegate these responsibilities. In its capacity as a committee of the Board, the Audit Committee shall be directly responsible for the oversight of the work of the public accounting firm (including resolution of disagreements between management and the public accounting firm regarding financial reporting) for the purpose of preparing or issuing an audit report or related work, and the public accounting firm shall report directly to the Audit Committee. The Audit Committee shall have the authority, to the extent it deems necessary or appropriate, to retain special legal, accounting or other consultants to advise the committee and carry out its duties, and to conduct or authorize investigations into any matters within its scope of responsibilities.

The Audit Committee may request any officer or employee of the Company or the Company's outside counsel or public accountants to attend a meeting of the Audit Committee or to meet with any members of, or consultants to, the Audit Committee.

The Audit Committee shall make regular reports to the Board. The Audit Committee shall review and reassess the adequacy of this Charter annually and recommend any proposed changes to the Board for approval. The Audit Committee shall annually review the Audit Committee's own performance.

• Review and discuss with management and the public accountants the Company's annual audited financial statements, including disclosures made in Management's Discussion and Analysis of Financial Condition and Results of Operations," and recommend to the Board whether the audited financial statements should be included in the Company's annual report filed on Form 20-F.
• Review and discuss with management and the public accountants the Company's quarterly financial statements, including disclosures made under "Management's Discussion and Analysis of Financial Condition and Results of Operations" or similar disclosures, prior to the filing of its quarterly report.
• Review and discuss with management and the public accountants, as applicable, (a) major issues regarding accounting principles and financial statement presentations, including any significant changes in the Company's selection or application of accounting principles, and major issues as to the adequacy of the Company's internal controls and any special audit steps adopted in light of material control deficiencies; (b) analyses prepared by management or the public accountants setting forth significant financial reporting issues and judgments made in connection with the preparation of the financial statements, including analyses of the effects of alternative GAAP methods on the financial statements; (c) any management letter provided by the public accountants and the Company's response to that letter; (d) any problems, difficulties or differences encountered in the course of the audit work, including any disagreements with management or restrictions on the scope of the public accountants' activities or on access to requested information and management's response thereto; (e) the effect of regulatory and accounting initiatives, as well as off-balance sheet structures, on the financial statements of the Company; and (f) earnings press releases, as well as financial information and earnings guidance (generally or on a case-by-case basis) provided to analysts and rating agencies.
• Discuss with management the Company's major financial risk exposures and the steps management has taken to monitor and control such exposures, including the Company's risk assessment and risk management policies.
• Obtain and review a report from the public accountants at least annually regarding (a) the registered public accountants' internal quality-control procedures, (b) any material issues raised by the most recent quality-control review, or peer review, of the firm, or by any inquiry or investigation by governmental or professional authorities within the preceding five years respecting one or more independent audits carried out by the firm, (c) any steps taken to deal with any such issues, and (d) all relationships between the public accountants and the Company. Evaluate the qualifications, performance and independence of the public accountants, including a review and evaluation of the lead partner of the registered public accountant and taking into account the opinions of management.
• Ensure that the lead audit partner of the public accountants and the audit partner responsible for reviewing the audit are rotated at least every five years as required by the Sarbanes-Oxley Act of 2002.
• Discuss with management and the public accountants any accounting adjustments that were noted or proposed by the registered public accountants but were passed (as immaterial or otherwise).
• Establish procedures for (a) the receipt, retention and treatment of complaints received by the Company regarding accounting, internal accounting controls or auditing matters and (b) the confidential, anonymous submission by employees of the Company of concerns regarding questionable accounting or auditing matters.
• Review disclosures made by the Company's principal executive officer or officers and principal financial officer or officers regarding compliance with their certification obligations as required under the Sarbanes-Oxley Act of 2002 and the rules promulgated thereunder, including the Company's disclosure controls and procedures and internal controls for financial reporting and evaluations thereof.

D. Limitations of Audit Committee's Roles
While the Audit Committee has the responsibilities and powers set forth in its Charter, it is not the duty of the Audit Committee to prepare financial statements, plan or conduct audits or to determine that the Company's financial statements and disclosures are complete and accurate and are in accordance with generally accepted accounting principles and applicable rules and regulations. These are the responsibilities of management and the registered public accountants.