problema con firefox e IE7

[rockermendez]

Este es mi CSS:

Código:

.f_body {
	background-image: url(../img/BODY.gif);
	background-repeat: no-repeat;
	background-position: center top;
}
.f_news {
}
.celda_news {
	background-image: url(../img/barra_2.gif);
	background-repeat: no-repeat;
	background-position: left top;
	background-attachment: fixed;
	font-family: Arial, Helvetica, sans-serif;
	text-transform: uppercase;
	font-size: 14px;
	font-weight: bold;
	font-variant: normal;
	font-style: normal;
	line-height: normal;
	color: #333333;
	text-align: left;
	vertical-align: 8%;
	text-indent: 10px;
	letter-spacing: 1px;
}
.titulos {
	font-family: Tahoma;
	color: #333333;
	font-size: 12px;
	font-weight: bold;
	text-align: left;
	text-transform: uppercase;
}
.contenido {
	font-family: Tahoma;
	color: #333333;
	font-size: 12px;
	font-weight: normal;
	text-align: justify;
	text-indent: 20px;
	padding-top: 0px;
	padding-right: 5px;
	padding-bottom: 0px;
	padding-left: 5px;
}
.cont_up {
	background-image: url(../img/ventana%20contenido/images/contenido_01.jpg);
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-position: bottom;
	color: #FF00FF;
}

.marguen_derecho {
	background-image: url(../img/frame_news/frame_06.jpg);
	background-attachment: fixed;
	background-repeat: no-repeat;
}
.marguen_izquierdo {

	background-image: url(../img/frame_news/frame_04.jpg);
	background-attachment: fixed;
	background-repeat: repeat-y;
}
.cont_down {
	background-image: url(../img/ventana%20contenido/images/contenido_06.jpg);
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-position: top;
	color: #FF00FF;
}
.cont_derecha {
	background-image: url(../img/ventana%20contenido/images/contenido_04.jpg);
	background-attachment: fixed;
	background-repeat: repeat-y;
	background-position: 2px top;
	color: #FF00FF;
}
.cont_izquierda {
	background-image: url(../img/ventana%20contenido/images/contenido_02.jpg);
	background-attachment: fixed;
	background-repeat: repeat-y;
	color: #FF00FF;
	background-position: 1px top;
}
.body_up {
	background-image: url(../img/body/images/BODY_01.jpg);
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-position: center bottom;
	color: #000066;
	font-weight: bold;
}
.body_der {


	background-image: url(../img/body/images/BODY_04.jpg);
	background-repeat: repeat;
	background-position: right center;
	color: #000066;
	font-weight: bold;
}
.body_down {

	background-image: url(../img/body/images/BODY_05.jpg);
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-position: top;
	color: #000066;
	font-weight: bold;
}
.news_up {
	color: #FF9900;
	background-attachment: fixed;
	background-image: url(../img/frame_news/images/news_01.jpg);
	background-repeat: no-repeat;
	background-position: bottom;
	font-family: Tahoma;
	font-size: 11px;
	font-weight: bold;
	text-align: left;
	vertical-align: 1%;
	text-indent: 27px;
}
.news_iz {
	color: #FF6600;
	background-attachment: fixed;
	background-image: url(../img/frame_news/images/news_02.jpg);
	background-repeat: repeat-y;
	background-position: left;
}
.news_der {
	color: #FF6600;
	background-attachment: fixed;
	background-image: url(../img/frame_news/images/news_04.jpg);
	background-repeat: repeat-y;
	background-position: left top;
}
.news_down {
	color: #FF6600;
	background-attachment: fixed;
	background-image: url(../img/frame_news/images/news_05.jpg);
	background-repeat: no-repeat;
	background-position: top;
}
.titulos_conbarra {
	font-family: "Times New Roman", Times, serif;
	color: #333333;
	font-size: 14px;
	font-weight: bold;
	text-align: left;
	background-image: url(../img/barra.gif);
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-position: left top;
	text-indent: 20px;
	vertical-align: 11%;
	letter-spacing: 1px;
}
.body_isq {



	background-image: url(../img/body/images/BODY_02.jpg);
	background-repeat: repeat;
	background-position: left center;
	color: #000066;
	font-weight: bold;
}
.tablas_regitros {
	font-family: Tahoma;
	font-size: 11px;
	color: #666666;
	text-align: justify;
	font-weight: normal;
	font-variant: normal;
	text-transform: none;
	border-top-style: none;
	border-right-style: none;
	border-bottom-style: none;
	border-left-style: none;
	border-top-width: 1px;
	border-right-width: 1px;
	border-bottom-width: 1px;
	border-left-width: 1px;
}

.contenido_news {
	font-family: Tahoma;
	color: #333333;
	font-size: 11px;
	font-weight: normal;
	text-align: justify;
	text-indent: 20px;
	font-style: normal;
	display: table;
	font-variant: normal;
	text-transform: capitalize;
}
.users {
	font-family: Tahoma;
	color: #2A5FAA;
	font-size: 11px;
	font-weight: normal;
	text-align: justify;
	padding-top: 0px;
	padding-right: 5px;
	padding-bottom: 0px;
	padding-left: 5px;
	background-position: left;
	font-style: normal;
	line-height: normal;
}
#form	{
	margin: 0;
	padding: 0;
	color: #CCCCCC;
	background-position: center;
	border: 1px solid #EEEEEE;
}
input 	{
	color: #333333;
	font-size: 100%;
	margin: 2px;
	font-family: Tahoma;
	background-position: right;
	border: 1px ridge #CCCCCC;
	padding: 0px;
	background-image: url(../img/barra_2.gif);
}
.subtitulos {
	font-family: Tahoma;
	color: #2A5FAA;
	font-size: 13px;
	font-weight: bold;
	text-align: left;
	text-transform: capitalize;
	text-decoration: underline;
}
.finaltext {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 10px;
	font-style: normal;
	font-weight: bold;
	color: #333333;
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-position: center center;
	list-style-image: none;
	list-style-type: none;
	background-image: url(../img/barra grande.gif);
	text-align: center;
	vertical-align: super;
}
textarea, select{
	background-color: #FFFFFF;
	border: 1px solid #888888;
	background-image: url(../img/fondo_celdas.png);
	background-repeat: repeat;
}
.ENCABEZADOS {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 10px;
	font-style: normal;
	font-weight: bold;
	color: #333333;
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-position: center center;
	list-style-image: none;
	list-style-type: none;

	background-image: url(../img/barra grande.gif);
	text-align: center;
	vertical-align: super;
	background-image: url(../img/barra_grande.gif);
}.tablas_users {
	font-family: Tahoma;
	font-size: 11px;
	color: #999999;
	border-top-style: none;
	border-right-style: none;
	border-bottom-style: none;
	border-left-style: none;
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-image: url(../img/chess%20login.png);
}
.tablas_registros_2 {
	font-family: Tahoma;
	font-size: 11px;
	color: #666666;
	text-align: justify;
	font-weight: normal;
	font-variant: normal;
	text-transform: capitalize;
	display: table-caption;
	white-space: normal;
	border: 1px none #666666;
	background-image: url(../img/fondo_celdas.png);
}
.area_res {
	background-attachment: fixed;
	background-image: url(../img/perrito.png);
	background-repeat: no-repeat;
	background-position: right bottom;
	font-family: Tahoma;
	font-weight: bold;
	text-transform: capitalize;
	color: #666666;
	font-size: 70%;
	font-variant: normal;
	font-style: normal;
	line-height: normal;
	text-align: left;
	vertical-align: top;
}
Th	{
	
	color: #666666;
	background-position: center;
    text-transform: capitalize;
}

a {
	font-family: Tahoma;
	color:#2A5FAA;
}
a:visited {
	color: #2A00AA;
}
a:hover {
	color: #009FFF;
	font-weight: normal;
}
a:active {
	color: #2A5FAA;
}
.titulo_news {

	font-family: Tahoma;
	color: #333333;
	font-size: 10px;
	font-weight: bold;
	text-align: left;
	font-style: normal;
	display: table;
	font-variant: normal;
	text-transform: uppercase;
}
.titulos_tablas {
	font-family: Tahoma;
	color: #FFFFFF;
	font-size: 11px;
	font-weight: bold;
	text-align: left;
	text-transform: uppercase;
	background-color: #1A3668;
}
.cont_tablas {
	font-family: Tahoma;
	color: #808080;
	font-size: 11px;
	font-weight: normal;
	text-align: left;
	text-transform: capitalize;
	background-color: #EEE6FF;
	border-top-width: 0px;
	border-right-width: 0px;
	border-bottom-width: 0px;
	border-left-width: 0px;
	border-top-style: none;
	border-right-style: none;
	border-bottom-style: none;
	border-left-style: none;
	padding: 1px;
}
.reg_users_chesito {
	font-family: Tahoma;
	color: #2A5FAA;
	font-size: 11px;
	font-weight: normal;
	text-align: justify;
	padding-top: 0px;
	padding-right: 5px;
	padding-bottom: 0px;
	padding-left: 5px;
	background-position: left bottom;
	font-style: normal;
	line-height: normal;
	background-image: url(../img/chess%20login_viewpng.png);
	background-attachment: fixed;
	background-repeat: no-repeat;
}
.botonera {

	background-color: #FFFFFF;
	border: 1px solid #DDDDDD;
	background-image: url(../img/fondo_celdas.png);
	background-repeat: repeat;
}
.ver_mas {

	font-family: Tahoma;
	color: #333333;
	font-size: 10px;
	font-weight: normal;
	text-align: right;
	font-style: italic;
	display: block;
	font-variant: normal;
	text-transform: capitalize;
}
.noticias {
	color: #FF9900;
	font-family: Tahoma;
	font-size: 12px;
	font-weight: bold;
	text-transform: capitalize;
}