PLACEMENT AGENCY AGREEMENT

(b)                                  The term of the Placement Agent’s exclusive engagement will be six months; however, the Company may terminate the engagement at any time upon 5 days written notice to the Placement Agent.  Upon termination, the Placement Agent will be entitled to collect all fees earned and, to the extent provided herein, to be reimbursed for expenses incurred through the date of termination.  Nothing in this Agreement shall be construed to limit the ability of the Placement Agent or its affiliates to pursue, investigate, analyze, invest in, or engage in investment banking, financial advisory or any other business relationship with entities or persons other than the Company.

Section 2.                                           Representations, Warranties and Agreements of the Company .

The Company hereby represents, warrants and covenants to the Placement Agent as of the date hereof, and as of the Closing Date of the Offering, as follows:

(a)                                   Securities Law Filings .  The Company has filed with the Securities and Exchange Commission (the “Commission”) the Registration Statement, which became effective on June 23, 2008, for the registration under the Securities Act of 1933, as amended (the “ Act ”), of the Securities.  On the date of the filing of the Registration Statement and the date on which the Registration Statement became effective, the Company met the requirements for use of Form S-3 under the Act.  Such registration statement meets the requirements set forth in Rule 415(a)(1)(x) under the Act and complies in all other material respects with said Rule.  The Company will file with the Commission pursuant to Rule 424(b) under the Act a supplement to the form of prospectus included in such registration statement relating to a placement of the Securities and the plan of distribution thereof and the Company has advised the Placement Agent of all further material information (financial and other) with respect to the Company to be set forth therein.  Such registration statement, including the exhibits thereto, as amended at the date of this Agreement, is hereinafter called the “ Registration Statement ”; such prospectus, in the form in which it appears in the Registration Statement, is hereinafter called the “Base Prospectus”; and the supplemented form of prospectus, in the form in which it will be filed with the Commission pursuant to Rule 424(b), is hereinafter called a “ Prospectus Supplement .”  Any reference herein to the Registration Statement, the Base Prospectus or the Prospectus Supplement shall be deemed to refer to and include the documents incorporated by reference therein (the “ Incorporated Documents ”) pursuant to Item 12 of Form S-3 which were filed under the Securities Exchange Act of 1934, as amended (the “ Exchange Act ”), on or before the date of this Agreement, or the issue date of the Base Prospectus or Prospectus Supplement, as the case may be; and any reference herein to the terms “amend,” “amendment” or “supplement” with respect to the Registration Statement, the Base Prospectus or the Prospectus Supplement shall be deemed to refer to and include the filing of any document under the Exchange Act after the date of this Agreement and prior to the time of the Closing (as defined below), or the issue date of the Base Prospectus or the Prospectus Supplement, as the case may be, deemed to be incorporated therein by reference.  All references in this Agreement to financial statements and schedules and other information which is “contained,” “included” or “stated” in the Registration Statement or the Prospectus Supplement (and all other references of like import) shall be deemed to mean and include all such financial statements and schedules and other information which is or is deemed to be incorporated by reference in the Registration Statement or the Prospectus Supplement, as the case may be.

(b)                                  No Stop Order .  No stop order suspending the effectiveness of the Registration Statement or the use of the Base Prospectus or the Prospectus Supplement has been issued, and no proceeding for any such purpose is pending or has been initiated or, to the Company’s knowledge, is threatened by the Commission.

(c)                                   Compliance with Applicable Regulations .  The Registration Statement (and any further documents to be filed with the Commission) contains all exhibits and schedules as required by the Act. 

Each of the Registration Statement and any post-effective amendment thereto, at the time it became effective, complied in all material respects with the Act and the Exchange Act and the applicable rules and regulations of the Commission thereunder and did not and, as amended or supplemented, if applicable, will not, contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading.  Each of the Base Prospectus and the Prospectus Supplement, as of its respective date, complied in all material respects with the Act and the Exchange Act and the applicable rules and regulations of the Commission thereunder.  Each of the Base Prospectus and the Prospectus Supplement, as amended or supplemented, did not and will not contain as of the effective date thereof any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading.  The Incorporated Documents, when they were filed with the Commission, conformed in all material respects to the requirements of the Exchange Act and the applicable rules and regulations of the Commission thereunder, and none of such documents, when they were filed with the Commission, contained any untrue statement of a material fact or omitted to state a material fact necessary to make the statements therein not misleading; and any further documents so filed and incorporated by reference in the Base Prospectus or Prospectus Supplement prior to the Closing, when such documents are filed with the Commission, will conform in all material respects to the requirements of the Exchange Act and the applicable rules and regulations of the Commission thereunder, as applicable, and will not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein not misleading.  Notwithstanding the foregoing, the Company makes no representations or warranties as to the information contained in or omitted from the Prospectus Supplement or any amendment thereof or supplement thereto in reliance upon and in conformity with information furnished in writing to the Company by or on behalf of the Placement Agent specifically for use in the Registration Statement or the Prospectus Supplement.  No post-effective amendment to the Registration Statement reflecting any facts or events arising after the effective date thereof which represent, individually or in the aggregate, a fundamental change in the information set forth therein is required to be filed with the Commission.

(d)                                  Reports and Documents, etc .  There are no documents required to be filed with the Commission in connection with the transaction contemplated hereby that (x) have not been filed as required pursuant to the Act or (y) will not be filed within the requisite time period.  There are no contracts or other documents required to be described in the Prospectus Supplement, or to be filed as exhibits or schedules to the Registration Statement, which have not been described or filed as required.

(e)                                   Offering Materials Furnished to the Placement Agent .  The Company has delivered, or will as promptly as practicable deliver, to the Placement Agent complete conformed copies of the Registration Statement and of each consent and certificate of experts filed as a part thereof, and conformed copies of the Registration Statement (without exhibits) and the Base Prospectus and the Prospectus Supplement, as amended or supplemented, in such quantities and at such places as the Placement Agent reasonably requests.

(f)                                     Distribution of Offering Material .  The Company has not distributed and will not distribute, prior to the Closing Date, any offering material in connection with the offering and sale of the Securities other than the Base Prospectus and the Prospectus Supplement or the Registration Statement and copies of the documents incorporated by reference therein.  For the avoidance of doubt, any other material prepared and distributed solely by the Placement Agent is not deemed to be distributed by the Company for purposes of this paragraph (f).

(g)                                  The Placement Agency Agreement .  This Agreement has been duly authorized, executed and delivered by, and is a valid and binding agreement of, the Company, enforceable against the Company in accordance with its terms, except as rights to indemnification and contribution hereunder

may be limited by applicable law and except as the enforcement hereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting the rights and remedies of creditors or by general equitable principles.

(h)           Authorization of the Securities .  The Securities have been duly authorized for issuance and sale, and the Shares, when issued and delivered by the Company to the Investors against payment therefor pursuant to this Agreement, will be validly issued, fully paid and nonassessable.  The Warrant Shares have been duly authorized and reserved for issuance pursuant to the terms of the Warrants, and the Warrant Shares, when issued by the Company upon the valid exercise of the Warrants and payment of the exercise price, will be duly issued, fully paid and nonassessable.

(i)            No Material Adverse Change .  Subsequent to the respective dates as of which information is given in the Base Prospectus and in any Prospectus Supplement:  (i) there has been no material adverse change or effect, or any development that could reasonably be expected to result in a material adverse change or effect, in the condition, financial or otherwise, or in the earnings, business, operations or prospects of the Company and the Subsidiaries (as defined below) taken as a whole (any such change or effect, where the context so requires, is called a “ Material Adverse Change ” or a “ Material Adverse Effect ”); (ii) the Company and the Subsidiaries have not incurred any material liability or obligation, indirect, direct or contingent, not in the ordinary course of business nor entered into any material transaction or agreement not in the ordinary course of business; and (iii) there has been no dividend or distribution of any kind declared, paid or made by the Company on any class of capital stock or repurchase or redemption by the Company of any class of capital stock.

(j)            Independent Accountants .  KPMG LLP, which has expressed its opinion with respect to the financial statements (which term as used in this Agreement includes the related notes and schedules thereto) and supporting schedules filed with the Commission as a part of the Registration Statement and incorporated by reference in the Prospectus Supplement, is an independent registered public accounting firm as required by the Act and the Exchange Act.

(k)           Preparation of the Financial Statements .  The financial statements filed with the Commission as a part of the Registration Statement or included or incorporated by reference in the Base Prospectus or Prospectus Supplement present fairly the financial position of the Company and its consolidated Subsidiaries as of and at the dates indicated and the results of their operations and cash flows for the periods specified therein.  The supporting exhibits and schedules included in the Registration Statement, if any, present fairly the information required to be stated therein subject to the normal year-end adjustments which are not expected to be material in amount.  The assumptions used in preparing the pro forma financial statements, if any, provide a reasonable basis for presenting the significant effects attributable to the transactions or events described therein, any related pro forma adjustments comply with Regulation G and give appropriate effect to the assumptions, and the pro forma columns and reconciliations therein reflect the proper application of adjustments to the corresponding historical financial statements.  Such financial statements and supporting schedules, if any, have been prepared in conformity with generally accepted accounting principles as applied in the United States (“ GAAP ”), as applicable, applied on a consistent basis throughout the periods involved, except as may be expressly stated in the related notes thereto and comply in all material respects with the Act, the Exchange Act and the applicable rules and regulations of the Commission thereunder.  No other financial statements or supporting schedules or exhibits are required by the Act or the rules and regulations of the Commission thereunder to be included in the Registration Statement or the Prospectus Supplement.

(l)            Incorporation and Good Standing .  Each of the Company and its subsidiaries set forth in Exhibit B hereto (the “ Subsidiaries ”) has been duly organized and is validly existing and, as applicable, is a corporation in good standing under the laws of its jurisdiction of incorporation with full corporate power

and authority to own its properties and other assets and conduct its business as described in the Prospectus Supplement, and is duly qualified or licensed to do business as a foreign corporation and, as applicable, is in good standing under the laws of each jurisdiction which requires such qualification or license, except where the failure to be so qualified or in good standing would not have a Material Adverse Effect.

(m)          Capitalization and Other Capital Stock Matters .  The authorized, issued and outstanding capital stock of the Company is as set forth in the Registration Statement and in each Prospectus Supplement (other than for issuances after the dates thereof, if any, pursuant to employee benefit plans described in any Prospectus Supplement or upon exercise of outstanding options or warrants described in any Prospectus Supplement).  The Securities conform in all material respects to the description thereof contained in the Base Prospectus and the Prospectus Supplement.  As of June 30, 2009, there were 67,417,834 shares of common stock outstanding.  Since June 30, 2009, the Company has not issued any securities other than (i) Common Stock of the Company pursuant to the exercise of previously outstanding options in connection with the Company’s employee stock purchase and option plans (the “ Plans ”), outstanding warrants and other outstanding obligations, (ii) options granted pursuant to the Plans in the ordinary course of business consistent with past practice, in each case as disclosed in the Base Prospectus and each Prospectus Supplement, and (iii) 3,448,042 shares of Class A common stock and warrants to purchase 1,724,024 shares of Class A common stock pursuant to a Prospectus Supplement dated July 16, 2009.  All the issued and outstanding shares of the capital stock of the Company and the Subsidiaries have been duly authorized and validly issued, are fully paid and nonassessable and have been issued in compliance, in all material respects, with federal and state securities laws, as applicable.  Except as set forth in the Base Prospectus and each Prospectus Supplement, all of the outstanding shares of capital stock of the Subsidiaries are owned, directly or indirectly, by the Company.  None of the outstanding shares of capital stock of the Company or any Subsidiary were issued in violation of any preemptive rights, rights of first refusal or other similar rights to subscribe for or purchase securities.  There are no authorized or outstanding options, warrants, preemptive rights, rights of first refusal or other rights to purchase, or equity or debt securities convertible into or exchangeable or exercisable for, any capital stock of the Company or any Subsidiary other than those described in the Base Prospectus and each Prospectus Supplement.  The description of the Company’s stock option, stock bonus and other stock plans or arrangements, and the options, warrants or other rights granted thereunder, set forth in the Base Prospectus and the Prospectus Supplement accurately and fairly presents the information required by the Act to be shown with respect to such plans, arrangements, options and rights.  Except as set forth in the Base Prospectus or in any Prospectus Supplement, the Company does not have any subsidiaries or own directly or indirectly any of the capital stock or other equity or long-term debt securities or have any equity interest in any other person.

(n)           Stock Exchange Listing .  The Common Stock is registered under the Exchange Act and is lised on the NASDAQ Capital Market (“ NASDAQ ”), and the Company has taken no action designed to, or likely to have the effect of terminating the registration of the Common Stock under the Exchange Act or suspending from trading the Common Stock from NASDAQ, nor has the Company received any information suggesting that the Commission or FINRA is contemplating terminating or suspending such registration or quotation.

(o)           No Transfer Taxes or Other Fees .  There are no transfer taxes or other similar fees or charges under United States law or the laws of any state or any political subdivision thereof, required to be paid in connection with the execution and delivery of this Agreement or the issuance and sale by the Company of the Securities.

(p)           No Price Stabilization or Manipulation .  The Company has not taken and will not take, directly or indirectly, any action designed to or that could reasonably be expected to cause or result in stabilization or manipulation of the price of the Common Stock to facilitate the sale or resale of the Securities.

(q)                                  Blue Sky; FINRA Matters.   The Securities have been or will be qualified for sale under the securities laws of such jurisdictions (United States and foreign) as the Placement Agent and the Investors determine, or are or will be exempt from the qualification and broker-dealer requirements of such jurisdictions.

Any certificate signed by an officer of the Company and delivered to the Placement Agent in connection herewith or in connection with the Offering shall be deemed to be a representation and warranty by the Company to the Placement Agent as to the matters set forth therein.

Section 3.                                           Delivery and Payment .

On July 22, 2009 (the “ Closing Date ”), each of the Investors will remit by wire transfer to an account designated by the Company an amount equal to the aggregate purchase price for the Securities purchased by such Investor as set forth on the signature page to the Subscription Agreement (each a “ Subscription Agreement ”) entered into between the Company and each of the Investors.  At 10:00 a.m., California time or at such other time on the Closing Date as may be agreed upon by the Company and the Placement Agent, the Company shall deliver to each Investor (i) the Shares purchased by such Investor via the Depository Trust Company’s (“ DTC ”) Deposit or Withdrawal at Custodian system via the DTC instructions set forth on the signature page of such Investor’s Subscription Agreement and (ii) the Warrants in physical, certificated form to the address set forth on the signature page of such Investor’s Subscription Agreement, such Shares and Warrants to be registered in such name or names as designated by the Investor on the signature page to the Subscription Agreement.  The closing of the takedown (the “ Closing ”) shall take place at the Company’s principal executive offices or at the offices of the Company’s legal counsel.  All actions taken at the Closing shall be deemed to have occurred simultaneously.

Section 4.                                           Covenants of the Company .

The Company further covenants and agrees with the Placement Agent as follows:

(a)                                   Registration Statement Matters .  During the period beginning on the date hereof and ending at the time of the Closing (such period being referred to herein as the “ Prospectus Delivery Period ”), the Company agrees to advise the Placement Agent promptly after it receives notice thereof, of the time when any amendment to the Registration Statement has been filed or becomes effective or any supplement to the Prospectus Supplement or any amended Prospectus Supplement has been filed and to furnish the Placement Agent with copies thereof; to file promptly all reports and any definitive proxy or information statements required to be filed by the Company with the Commission pursuant to Section 13(a), 14 or 15(d) of the Exchange Act subsequent to the date of the Prospectus Supplement; to advise the Placement Agent, promptly after it receives notices thereof (i) of any request by the Commission to amend the Registration Statement or to amend or supplement the Prospectus Supplement or for additional information and (ii) of the issuance by the Commission, of any stop order suspending the effectiveness of the Registration Statement or any post-effective amendment thereto or any order directed at any Incorporated Document or any amendment or supplement thereto or any order preventing or suspending the use of the Base Prospectus or the Prospectus Supplement or any amendment or supplement thereto or any post-effective amendment to the Registration Statement, of the suspension of the qualification of the Securities for offering or sale in any jurisdiction, of the institution or threatened institution of any proceeding for any such purpose, or of any request by the Commission for the amending or supplementing of the Registration Statement or Prospectus Supplement or for additional information; and, in the event of the issuance of any stop order or of any order preventing or suspending the use of the Base Prospectus or Prospectus Supplement or suspending any