div.anchoTop { width:800px; height:35px; overflow:hidden; margin:0; background:url(../images/bgAnchoTop.gif) no-repeat top left; }
div.anchoMid { width:800px; margin:0; background:url(../images/bgAnchoMid.gif) repeat-y top left; }
    div.contenido { padding:10px 30px; }
         
div.anchoBot { width:800px; height:35px; overflow:hidden; margin:0; background:url(../images/bgAnchoBot.gif) repeat-y top left; }