MANCHESTER - The city this week picked up the cost of retaining a full-time domestic violence prosecutor to handle the estimated 800 to 900 cases that go through Ninth Circuit Court each year now that the county attorney's office ceased funding the post. A $30,000 annual grant that the Mary Gale Foundation gave the city Tuesday is among several funding sources city officials cobbled together to pay the specialized prosecutor's estimated $115,000 annual salary and benefits, they said. A federal grant should bring in another $30,000 to $35,000 and the city is poised to pick up the balance through the community improvement program process, deputy city solicitor Thomas Arnold said. The $30,000 award will target those who prey on aging, frail or indigent women, in compliance with the Mary Gale Foundation's charitable mission to serve aging and needy women in greater Manchester, foundation trustee Patrick M. Tufts said. "We...heard a couple of times that the (prosecutor's) position was in jeopardy. We found out a large percentage of domestic violence cases are against the elderly and the elderly are a very frail population. That is of great interest to the Mary Gale Foundation," Tufts said.