hello, i just got a macbook air and i am new to the whole mac thing. So i have a problem. i have a question on the enter/ return key. It works as to press enter and also to return when i type. But i couldn't use it on this chat website. for example i want to message people, after i type my message, i press the enter key and it did not send the message. It just return and created and new line of space for me to type. Can anybody help me? please