hi,
    I am implementing chat application. Most probably the application was completed. But what i want to do is, in my chat application the operator and client should whether they are responding or not each other. For that i should display the notification message as "client is typing the message" for operator and vice versa under chat window. what i mean is when client is responding to operator message the operator should have notification message that client is typing the message when client start typing message and viceversa. and also when third party comes to chat both client and operator should have the notification message of third party. Pease help me regarding coding so that i could complete my project. 
   Thanks in advance