Any county, city, or town may, through its governing body, assess as part of the costs incident to each civil action filed in the courts located within its boundaries a sum not in excess of $4. The imposition of such assessment shall be by ordinance of the governing body, which ordinance may provide for different sums in circuit courts and district courts, and the assessment shall be collected by the clerk of the court in which the action is filed and remitted to the treasurer of such county, city, or town and held by such treasurer subject to disbursements by the governing body for the acquisition of (i) law books, law periodicals and computer legal research services, and computer terminals for offsite placement to maximize access to the law library by the public and (ii) equipment for the establishment, use, and maintenance of a law library that shall be open for the use of the public at hours convenient to the public. In addition to the acquisition of law books, law periodicals and computer legal research services, and equipment, the disbursements may include compensation to be paid to librarians and other necessary staff for the maintenance of such library and acquisition of suitable quarters for such library. The compensation of such librarians and the necessary staff and the cost of suitable quarters for such library shall be fixed by the governing body and paid out of the fund created by the imposition of such assessment of cost. Disbursements may be made to purchase or lease computer terminals for the purpose of retaining such research services. The assessment provided for in this section shall be in addition to all other costs prescribed by law, but shall not apply to any action in which the Commonwealth or any political subdivision thereof or the federal government is a party and in which the costs are assessed against the Commonwealth or any political subdivision thereof or the federal government. The governing body is authorized to accept contributions to the fund from any bar association. Any such library established in the County of Wythe shall be located only in a town that is the seat of the county government.