function limitText(id,limit) {
	var textArea = document.getElementById(id).value;
	var textAreaLen = textArea.length;
	
	//remove any carriage returns that may have been entered
	document.getElementById(id).value = textArea.replace(/\r|\n|\r\n/g, "");
	
	//if we have had to remove carriage returns, let the user know
	if (document.getElementById(id).value !== textArea) {
		alert('Sorry - you can\'t insert carriage returns in your message!');
	}
	
	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;
}