hover用法

$('.F_box_2').hover(
            function(){

                $(this).find(".make_reply").css({"color":"#c00","text-decoration":"underline","background-position":"12px -147px"});


            },
            function(){
                $(this).find(".make_reply").css({"color":"#666","text-decoration":"","background-position":"12px -117px"});


    });