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

@-moz-document domain("flip.pt") {

table.Cabecalho,
#dnn_RightPane,
td[style="width:300px;vertical-align:top;"],
table[style="width:939px;"],
div.DnnModule-806,
div.DnnModule-1212

 { display: none !important }

#dnn_ContentPane:before 

 { content: url("http://www.flip.pt/Portals/2/Logo_FLIP.png") }

}