function disableSubmit( button_id ) {
  document.getElementById(button_id).disabled = true;
  setTimeout( function() {document.getElementById(button_id).disabled = false;}, 2000 );
  return true;
}

function handleContResponse(r_code) {
  var elem1 = document.getElementById('cont_name');
  var elem2 = document.getElementById('cont_email');
  var elem3 = document.getElementById('cont_message');
  elem1.style.backgroundColor = elem2.style.backgroundColor = elem3.style.backgroundColor = "#ffffff";
  if( r_code == 0 ) {
//	document.forms[0].reset();
  }
  if( r_code == 1 ) {
	elem1.style.backgroundColor = "#ffbbbb";
	elem1.focus();
  }
  if( r_code == 2 ) {
	elem2.style.backgroundColor = "#ffbbbb";
	elem2.focus();
  }	
  if( r_code == 3 ) {
	elem3.style.backgroundColor = "#ffbbbb";
	elem3.focus();
  }	
}