function countTextarea(textareaId, counterId, maxlength) {
	textarea = document.getElementById(textareaId);
	counter = document.getElementById(counterId);
	if (textarea.value.length > maxlength) {
			textarea.value = textarea.value.substring(0, maxlength);
	}
	counter.firstChild.nodeValue = maxlength - textarea.value.length;
}