var t = 1;

function resize(id) {
	document.getElementById(id).style.color = '#666666';
	var lines = document.getElementById(id).value.split('\n');
	var newRows = lines.length + 1;
	var oldRows = t;
	for (var i = 0;i < lines.length;i++) {
		var line = lines[i];
		if (line.length >= 41) newRows += Math.floor(line.length/41	);
	}
	if (newRows != t) {
		t = newRows;
		document.getElementById(id).style.height = 20*t+1+'px';
	}
}