Display row by Radio button selected change

function DisplayRowonRbl()
{     
     var trDesignation= document.getElementById('<%=trDesignation.ClientID%>');
     var tblDepartment= document.getElementById('<%=tblDepartment.ClientID%>');
      var s=document.getElementById('<%=rbnDepartment.ClientID%>');
      var s1=s.getElementsByTagName('input');
      for (var i = 0; i < s1.length; i++)
      {
          if (s1[i].checked && s1[i].value=='Others')
          {
                trDesignation.style.display = '';
                tblDepartment.style.display = 'none';
           }
           else
           {
                  tblDepartment.style.display = '';
                  trDesignation.style.display = 'none';
                 }
            }
   }

Call the above method on the selected change properties of radiobutton.