function textarea(e, uid) {
	var max = e.maxLength;
	var length = e.value.length;
	var diff = max - length;

	var counter = document.getElementById("counter_" + uid);
	console.log(diff);

	if ( length < max ) {
		counter.style.color = "green";
	}
	else if ( length >= max ) {
		counter.style.color = "red";
	}

	counter.innerHTML = diff;
}