function textCounterID(fieldId, countfield, maxlimit) {
	if (document.getElementById(fieldId).value.length > maxlimit){ // if too long...trim it!
		document.getElementById(fieldId).value = document.getElementById(fieldId).value.substring(0, maxlimit);
	}
	// otherwise, update 'characters left' counter
	else {
		document.getElementById(countfield).innerHTML = maxlimit - document.getElementById(fieldId).value.length;
	}
}