hello all i was thinking to make the ajax im mobile friendly so wanted to add send button to the chat box

i added the following code in the plugins/ajaxim/static/css

span.ow_button span{
    background-image: url('images/ic_arrow-right.png');
    background-repeat: no-repeat;
    display: inline-block;
    height: 24px;
}
.talk_box_msg .input[type=button]
{
      
    padding-left: 20px;
}

but the send button doesnot apear on the chat box

can anyone help with this ?