라디오버튼 클릭 활성화 비활성화 효과 주기

<input type="radio" name="test_type" id="test_type" value=""  onclick="ob.sc.test();">   함수불러오기
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if(!oba.sc.test) {
        oba.sc.test= function () {
            var res = $("input[name='test_type']:checked").val() ;     test_type 값비교
            if(res == 1){
                $("#test1").attr("disabled", "disabled");                        비활성화시키기
                $("#test2").attr("disabled", "disabled");
                $("#test3").attr("disabled", "disabled");
                $("#test4").attr("disabled", "disabled");
                for(var i=1; i<=5; i++){
                    $("#test_"+i+"_1").removeAttr("disabled");                 활성화시키기
                    $("#test_"+i+"_2").removeAttr("disabled");
                }
            }else if(res == 2){
                $("#test1").removeAttr("disabled");             활성화시키기
                $("#test2").removeAttr("disabled");
                $("#test3").removeAttr("disabled");
                $("#test4").removeAttr("disabled");
                for(var i=1; i<=5; i++){
                    $("#test_"+i+"_1").attr("disabled", "disabled"); 비활성화시키기
                    $("#test_"+i+"_2").attr("disabled", "disabled");
                }
            }
        }
    }