function length_text( p_ta, maxchars, counter) {
  var max = 135;
  if (maxchars != '' && maxchars != undefined) {
      max = maxchars;
  }
  if( p_ta.value.length > max ) {
    p_ta.value = p_ta.value.substr( 0, max );
  }
  
  document.getElementById(counter).innerHTML = maxchars-p_ta.value.length;

}