1. The collector, with the approval of the mayor, may employ such attorneys as he deems necessary to collect such taxes and to prosecute suits for taxes.

2. Such attorneys shall receive as total compensation, a sum, not to exceed six percent of the amount of taxes actually collected and paid into the treasury, and an additional sum not to exceed two dollars for each suit filed when publication is not necessary, and not to exceed five dollars where publication is necessary, as may be agreed upon in writing and approved by the mayor, before such services are rendered.

3. The attorney fees shall be taxed as costs in the suit and collected as other costs.