function afmValidator(source,args)
  {
    var vafm = args.Value
    var r = false
    vafm = String(vafm).replace(/^\s+|\s+$/g, '')
    if (vafm.match(/^\d{9}$/)) 
    {
          var sum = 0
          for (var i = 0; i < 8; i++) 
          {
            var n = Number(vafm.charAt(i))
            sum += n * Math.pow(2, (8 - i))

          }
          
          r = (sum % 11) % 10 == Number(vafm.charAt(8))
       }
       else
       {
        r = false
        }
      
        args.IsValid=r      
  }
  
  function acceptValidator(source, args)
  {
    ch = document.getElementById("Checkbox4");   
    args.IsValid = ch.checked;
  }
  
  function ageValidator(source, args)
  {
      ch = document.getElementById("ctl00_ContentPlaceHolder2_CheckBox1");   
     args.IsValid = ch.checked;
  }