No seu css, nessa class ” header_main_res ” , você define o tamanho do seu banner.
arquivo style/red.css
Nessa parte que você define .
/* header */
.header_top { background:none repeat scroll 0 0 #313131; border-bottom:2px solid #515150; }
.header_main_bg { background:url("../images/content_topbg.gif") repeat-x scroll center top transparent; background-color:#EFEFEF; clear:both; padding:25px 0; position:relative; }
.header_top_res p a { color:#d05959; text-decoration:none;}
.header_main_res #logo h1 { color:#666666; font-size:38px; margin:0px; padding:0px; }
.header_main_res #logo h1 a { color:#666666; text-decoration: none; margin:0px; padding:0px; }
.header_main_res .description { color:#999999; font-family:Georgia,serif; font-size:14px; font-style:italic; }
.header_menu { background:#b22222; border-top:2px solid #c35353;}
.cp_logo {height:80px; width:300px; background:transparent url(../images/cp_logo_black.png) no-repeat scroll 0 0}
O meu header tá como abaixo, sinceramente não descobri onde mudar.
/* header */
.header_top_res { margin:0 auto; width:940px; }
.header_top_res p { padding:8px 0 8px 8px; color:#fff; text-align:right; }
.header_top_res p a:hover { text-decoration:underline; }
.header_top_res p img.srvicon { margin:-4px 0; border:none; }
.header_main_res .searchblock .form_search { margin:0; padding:0;}
.header_main_res .searchblock label { margin:3px 4px; padding:0; float:left; color:#fff;}
.header_main_res .searchblock .editbox_search { margin:0 4px; padding:3px; float:left; width:174px; font:normal 12px/1.5em Arial, Helvetica, sans-serif; background:#fff; border:1px solid #949494;}
.header_main_res .searchblock .list_search { margin:0 4px; padding:2px; float:left; width:100px; height:23px; font:normal 12px/1.5em Arial, Helvetica, sans-serif; background:#fff; border:1px solid #949494;}
.header_main_res { margin:0 auto; width:940px;}
.header_main_res #logo { float:left; }
.header_main_res .adblock { margin-top:10px; float:right;}
.header_menu_res{margin:0 auto; width:940px; padding:7px 0;}
.header_menu_res .obtn{float:right; font-size:16px; padding:4px 40px}
Nessa linha
.header_main_res { margin:0 auto; width:940px;}
você vai setar se backgroud manualmente .
e apaga a .class .logo , tudo que tiver relacionado.