@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document domain("facebook.com") {
/*
.header_buttons, .chat_window {width:400px !important}
.chat_conv, .chat_header {width:398px !important}
.chat_info {width:343px !important}
.chat_input {width:350px !important}
*/
}