UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549


                                 SCHEDULE 13G


                   Under the Securities Exchange Act of 1934
                             (Amendment No. ____)*





                         Online Resources Corporation
                                (Name of Issuer)


                                 Common Stock
                         (Title of Class of Securities)


                                   68273G101
                                 (CUSIP Number)


                               December 31, 2005
            (Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

       [X] Rule 13d-1(b)

       [_] Rule 13d-1(c)

       [_] Rule 13d-1(d)


* The remainder of this cover page shall be filled out for a reporting person's
  initial filing on this form with respect to the subject class of securities,
  and for any subsequent amendment containing information which would alter the
  disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).

                              Page 1 of 11 pages



CUSIP No. 68273G101                 13G                     Page 2 of 11 Pages

-------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON
    I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


    Oberweis Asset Management, Inc.
    36-3668290
-------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

    Not Applicable
    (a) [_]
    (b) [_]
-------------------------------------------------------------------------------
 3  SEC USE ONLY



-------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION


    Illinois
-------------------------------------------------------------------------------
              5  SOLE VOTING POWER

                 None
             ------------------------------------------------------------------
 NUMBER OF    6  SHARED VOTING POWER
   SHARES
BENEFICIALLY     1,461,134
  OWNED BY   ------------------------------------------------------------------
    EACH      7  SOLE DISPOSITIVE POWER
 REPORTING
   PERSON        None
    WITH     ------------------------------------------------------------------
              8  SHARED DISPOSITIVE POWER

                 1,461,134
-------------------------------------------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


    1,461,134
-------------------------------------------------------------------------------
10  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE
    INSTRUCTIONS)

    Not Applicable                                                         [_]
-------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)


    5.8%
-------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)


    IA
-------------------------------------------------------------------------------



CUSIP No. 68273G101                 13G                     Page 3 of 11 Pages

-------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON
    I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


    James D. Oberweis
-------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

    Not Applicable
    (a) [_]
    (b) [_]
-------------------------------------------------------------------------------
 3  SEC USE ONLY



-------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION


    U.S.A.
-------------------------------------------------------------------------------
              5  SOLE VOTING POWER

                 None
             ------------------------------------------------------------------
 NUMBER OF    6  SHARED VOTING POWER
   SHARES
BENEFICIALLY     1,461,134
  OWNED BY   ------------------------------------------------------------------
    EACH      7  SOLE DISPOSITIVE POWER
 REPORTING
   PERSON        None
    WITH     ------------------------------------------------------------------
              8  SHARED DISPOSITIVE POWER

                 1,461,134
-------------------------------------------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


    1,461,134
-------------------------------------------------------------------------------
10  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE
    INSTRUCTIONS)

    Not Applicable                                                         [_]
-------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)


    5.8%
-------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)


    IN
-------------------------------------------------------------------------------



CUSIP No. 68273G101                 13G                     Page 4 of 11 Pages

-------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON
    I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


    James W. Oberweis
-------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

    Not Applicable
    (a) [_]
    (b) [_]
-------------------------------------------------------------------------------
 3  SEC USE ONLY



-------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION


    U.S.A.
-------------------------------------------------------------------------------
              5  SOLE VOTING POWER

                 None
             ------------------------------------------------------------------
 NUMBER OF    6  SHARED VOTING POWER
   SHARES
BENEFICIALLY     1,461,134
  OWNED BY   ------------------------------------------------------------------
    EACH      7  SOLE DISPOSITIVE POWER
 REPORTING
   PERSON        None
    WITH     ------------------------------------------------------------------
              8  SHARED DISPOSITIVE POWER

                 1,461,134
------------------------------------------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


    1,461,134
------------------------------------------------------------------------------
10  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE
    INSTRUCTIONS)

    Not Applicable                                                         [_]
------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)


    5.8%
------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)


    IN
------------------------------------------------------------------------------



Item 1(a) Name of Issuer:

          Online Resources Corporation

Item 1(b) Address of Issuer's Principal Executive Offices:

          4795 Meadow Wood Lane
          Suite 300
          Chantilly, VA 20151

Item 2(a) Name of Person Filing:

          Oberweis Asset Management, Inc. ("OAM")
          James D. Oberweis
          James W. Oberweis

Item 2(b) Address of Principal Business Office or, if none, Residence:

          OAM, James D. Oberweis and James W. Oberweis are located at:

          3333 Warrenville Road
          Suite 500
          Lisle, IL 60532

Item 2(c) Citizenship:

          OAM is an Illinois Corporation.
          James D. Oberweis and James W. Oberweis are U.S. citizens.

Item 2(d) Title of Class of Securities:

          Common Stock

Item 2(e) CUSIP Number:

          68273G101

Item 3    Type of Person:

          (e) OAM is an investment adviser in accordance with
              (S)240.13d-1(b)(1)(ii)(E). James D. Oberweis and James W.
              Oberweis are the principal stockholders of OAM.

                              Page 5 of 11 pages



Item 4 Ownership (at December 31, 2005):

       (a) Amount owned "beneficially" within the meaning of rule 13d-3:

           1,461,134 shares

       (b) Percent of class:

           5.8% (based on 25,095,094 shares outstanding on November 2,
           2005)

       (c) Number of shares as to which such person has:

           (i)   sole power to vote or to direct the vote: none

           (ii)  shared power to vote or to direct the vote: 1,461,134

           (iii) sole power to dispose or to direct the disposition
                 of: none

           (iv)  shared power to dispose or to direct disposition of:
                 1,461,134

       OAM serves as investment adviser to The Oberweis Funds (the
       "Fund"). Various of OAM's shareholders and employees are also
       officers and trustees of the Fund, but OAM does not consider the
       Fund to be controlled by such persons. Although the Fund is not
       controlled by OAM, pursuant to Rule 16d-3(a) the 197,862 shares
       beneficially owned by the Fund, with respect to which the Fund has
       delegated to OAM voting power and dispositive power, are considered
       to be shares beneficially owned by OAM by reason of such delegated
       powers. In addition to the shares beneficially owned by the Fund,
       other clients of OAM may own shares which are not included in the
       aggregated number of shares reported herein because OAM does not
       have or share voting or investment power over those shares.

Item 5 Ownership of Five Percent or Less of a Class:

       Not Applicable

Item 6 Ownership of More than Five Percent on Behalf of Another Person:

       The shares reported herein have been acquired on behalf of
       discretionary clients of OAM. Persons other than OAM are entitled
       to receive all dividends from, and proceeds from the sale of, those
       shares.

                              Page 6 of 11 pages



Item 7 Identification and Classification of the Subsidiary Which Acquired
       the Security Being Reported on by the Parent Holding Company:

       Not Applicable

Item 8 Identification and Classification of Members of the Group:

       Not Applicable

Item 9 Notice of Dissolution of Group:

       Not Applicable

                              Page 7 of 11 pages



Item 10 Certification:

By signing below I certify that, to the best of my knowledge and belief, the
securities referred to above were acquired and are held in the ordinary course
of business and were not acquired and are not held for the purpose of or with
the effect of changing or influencing the control of the issuer of the
securities and were not acquired and are not held in connection with or as a
participant in any transaction having that purpose or effect.

                              Page 8 of 11 pages



                                   Signature

   After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Date: February 14, 2006

   The undersigned corporation, on the date above written, agrees and consents
   to the joint filing on its behalf of this Schedule 13G in connection with
   its beneficial ownership of the security reported herein.

                                              OBERWEIS ASSET MANAGEMENT, INC.

                                              By: /s/ Patrick B. Joyce
                                                  ------------------------------
                                                  Patrick B. Joyce
                                                  Executive Vice President

   The undersigned individual, on the date above written, agrees and consents
   to the joint filing on his behalf of this Schedule 13G in connection with
   his beneficial ownership of the security reported herein.


                                              By: /s/ James D. Oberweis
                                                  ------------------------------
                                                  James D. Oberweis

   The undersigned individual, on the date above written, agrees and consents
   to the joint filing on his behalf of this Schedule 13G in connection with
   his beneficial ownership of the security reported herein.


                                              By: /s/ James W. Oberweis
                                                  ------------------------------
                                                  James W. Oberweis

                              Page 9 of 11 pages



                                 Exhibit Index

Exhibit 1 Joint Filing Agreement dated as of February 14, 2006 between
          Oberweis Asset Management, Inc., James D. Oberweis and James W.
          Oberweis

                              Page 10 of 11 pages