var oldobjb = "";

    function subfetta(objb)
    {
    if (oldobjb != "")
    {
    oldobjb.style.color="";
    oldobjb.style.fontWeight="";
    }
    objb.style.color="B22222";
    objb.style.fontWeight="bold";
    oldobjb = objb;
    }