.chat_wrapper {
        width: 500px;
        margin-right: auto;
        margin-left: auto;
        background: #CCCCCC;
        border: 1px solid #999999;
        padding: 10px;
        font: 12px 'lucida grande',tahoma,verdana,arial,sans-serif;
}
.chat_wrapper .message_box {
        background: #FFFFFF;
        height: 150px;
        overflow: auto;
        padding: 10px;
        border: 1px solid #999999;
}
.chat_wrapper .panel input{
        padding: 2px 2px 2px 5px;
}
.system_msg{
	color: #BDBDBD;font-style: italic;
}
.user_name{
	font-weight:bold;
}
.user_message{
	color: #88B6E0;
}

.chat_message_receive {
	border-radius: 15px;
}

.chat_message_sender {
	border-radius: 15px; 
	background-color: #fbfbfb;
}