Counter Twitter and Facebook during typing message

Hi,
There is a character limit for Twitter and Facebook messages (Facebook is strange by the way: on Facebook.com there is no limit!). In Twitter/Tweetdeck there is a counter so you can see how many characters you allready have used. It would be great to have that counter also in Trengo! Now you can only see that you used too many characters when you try to send the message: than you get the warning that you can not send the message because you used too many characters ...