function enableDisableBusinessBx() 
    {
        var listBx = document.getElementById("form1:businessListBx");
        var rg = document.getElementsByName("form1:userAccountTypeRG");

        for (var i = 0; i < rg.length; i++) 
        {
            if (rg[i].checked) 
            {
            if(rg[i].value == '61')
            {
                listBx.disabled=false;
            }
            else
            {
                listBx.disabled=true;
            }
            }
        }

    }