Illinois can still fund its courts even without an overall spending plan, the state’s top attorney has argued.Attorney General Lisa M. Madigan filed a complaint in Cook County Circuit Court arguing a law passed last year authorizes judicial and legislative salaries to be paid. In addition, she maintains, a 2004 Illinois Supreme Court case says general court payments can continue during a budget impasse.Her suit also says federal law requires some state expenditures in the absence of a budget. As a result, she is …