var defaultRows = 0;
function adjustTextAreaRows(tAreaName,numRows) {
	var minRows = 3;
	var maxRows = 53;
	var newRows;
	var tArea = document.getElementById(tAreaName);
	if(defaultRows == 0) {
		defaultRows = tArea.rows;
	}
	if(numRows == 0) {
		newRows = defaultRows;
	} else {
		newRows = tArea.rows + numRows;
	}
	if(newRows < minRows) {
		newRows = minRows;
	} else if(newRows > maxRows) {
		newRows = maxRows;
	}
	tArea.rows = newRows;
	return;
}