function limitText(id,limit) {
	var textArea = document.getElementById(id).value;
	var textAreaLen = textArea.length;
	
	if (textAreaLen > limit) {
		document.getElementById(id).value = document.getElementById(id).value.substring(0, limit);
		alert('Oops - you have exceeded the maximum number of characters allowed in the message field!');
	}
  return false;
}