No consigo que el div se expanda al 100% de la altura

[pangeacb]

aquí va el css

##########
####css####
##########
* {
padding: 0;
margin: 0;
}
html, body {
padding: 0;
margin: 0;
min-height:100%;
}
body{
background-color:#838281;
text-align:center;

}
* html body{
height:100%;
}
#contenedor{
position:relative;
text-align:left;
background-image:url(../images/sombracontenedor.png);
background-repeat: repeat-y;
width: 711px;
padding-top:10px;
min-height:100%;
overflow:auto;
margin-top: 10px;
margin-right: auto;
margin-bottom: 0px;
margin-left: auto;
padding-right: 0px;
padding-bottom: 0px;
padding-left: 0px;
}
* html body #contenedor{
height:100%;
}
#header #imagencabecera {
width:100%;
display:block;
text-align:center;
float:left;
}
#header #titulocabecera {
display:block;
float:right;
margin-top:5px;
margin-right:auto;
margin-left:auto;
margin-right:6%;
}
#navegacion {
float:right;
width:100%;
}
#navegacion .moduletable{
padding:10px 0px 10px 40px;
}
#navegacion h3 {
font-family:"Arial Narrow", "Arial Rounded MT Bold", "Arial Unicode MS";
font-size:11pt;
font-weight:normal;
}
#navegacion .pathway{
font-family:"Arial Narrow", "Arial Rounded MT Bold", "Arial Unicode MS";
font-size:8pt;
font-weight:bold;
}
#navegacion .pathway a:link{
color:#999999;
font-weight:normal;
text-decoration:none;
}
#navegacion .pathway a:visited{
color:#999999;
font-weight:normal;
text-decoration:none;
}
#navegacion .pathway a:hover{
color:#666666;
font-weight:normal;
text-decoration:none;
}
#izquierda {
overflow:auto;
float: left;
width: 200px;
padding-left: 40px;
padding-bottom:0px;
margin:auto;
color:#666666;
height:100%;
}
#izquierda a:link{
color:#666666;
text-decoration:none;
}
#izquierda a:visited{
color:#666666;
text-decoration:none;
}
#izquierda a:hover{
color:#999999;
text-decoration:none;
}
#izquierda .module_menu div{
background-image:url(../images/sombramenu_alto.png);
background-position:0px top;
background-repeat:no-repeat;
padding-bottom:0px;
padding-top:3px;
margin-top:10px;
}
#izquierda .module div{
background-image:url(../images/sombramenu_alto.png);
background-position:0px top;
background-repeat:no-repeat;
padding-bottom:0px;
padding-top:3px;
margin-top:10px;
}
#izquierda .module_menu div div{
padding-bottom:0px;
margin-bottom:0px;
background-image:url(../images/sombramenu_bajo.png);
background-position:bottom right;
background-repeat:no-repeat;
}
#izquierda .module div div{
padding-bottom:0px;
margin-bottom:0px;
background-image:url(../images/sombramenu_bajo.png);
background-position:bottom right;
background-repeat:no-repeat;
}
#izquierda .module_menu{
background-image:url(../images/sombramenu_centro.png);
background-repeat:repeat-y;
background-position:top right;
padding-left:0px;
}
#izquierda .module {
background-image:url(../images/sombramenu_centro.png);
background-repeat:repeat-y;
background-position:top right;
padding-left:0px;
}
#izquierda #form-login div{
background-image:none;
padding-bottom:30px;
}
#izquierda div div div{
padding-left:10px;
}
#izquierda h3 {
font-family:"Arial Narrow", "Arial Rounded MT Bold", "Arial Unicode MS";
font-size:11pt;
font-weight:bold;
color:#000000;
padding-bottom:10px;
}
#izquierda ul{
padding-bottom:30px;
font-family:"Arial Narrow", "Arial Rounded MT Bold", "Arial Unicode MS";
font-size:10pt;
text-align:left;
list-style-image:url(../images/bullet.png);
}
#izquierda li{
margin-top:10px;
}
#izquierda .parent ul{
margin-left:10px;
padding-bottom:0px;
padding-bottom:0px;
}
#izquierda fieldset{
border:none;
padding-bottom:10px;
font-family:"Arial Narrow", "Arial Rounded MT Bold", "Arial Unicode MS";
font-size:12pt;
}

/*##############################################
###aquí comienza la imagen bajo el menú #####################
###############################################*/
#bajoizquierda{
position:relative;
overflow:auto;
background:url(../images/arabesco.png) repeat-y top left;
float:left;
clear:left;
margin-left:40px;
width:200px;
min-height:100%;
}
#degsup{
border:thin solid #000000;
height:50px;
width:100%;
}
#deginf{
border:thin solid #000000;
position:relative;
top:100%;
height:50px;
width:100%;
margin-top:-100px;
}

/*##############################################
###aquí termina la imagen bajo el menú #####################
###############################################*/
#contenido {
height:100%;
float: right;
padding-right:40px;
padding-bottom:0px;
width:400px;
margin:auto;
font-family:"Arial Narrow", "Arial Rounded MT Bold", "Arial Unicode MS";
font-size:11pt;
text-align:justify;
}
.imagentexto{
padding:5px;
}
#contenido .sitemap ul {
list-style-image:url(../images/bullet.png);
}
.tool-tip{
font-family:"Arial Narrow", "Arial Rounded MT Bold", "Arial Unicode MS";
font-size:11pt;
}
#contenido a:link{
text-decoration:none;
color:#999999;
}
#contenido #component-contact{
float:left;
width:400px;
}
#contenido#searchForm{
width:400px;
float:left;
}
#contenido a:visited{
text-decoration:none;
color:#999999;
}
#contenido a:hover{
text-decoration:none;
color:#666666;
}
#contenido img{
border:none;
}
#contenido .componentheading{
font-family:"Arial Narrow", "Arial Rounded MT Bold", "Arial Unicode MS";
font-size:18pt;
text-align:left;
}
#contenido .contentheading{
font-family:"Arial Narrow", "Arial Rounded MT Bold", "Arial Unicode MS";
font-size:18pt;
text-align:right;
padding-right:10px;
}
#contenido .lineabajotitulo{
background-image:url(../images/subrayado.png);
background-repeat:no-repeat;
background-position:95%;
height:14px;
}
#contenido .small, #contenido .createdate, #contenido .modifydate, #contenido .mxcdefault_dotted{
font-size:8pt;
text-transform:uppercase;
font-weight:bold;
}
#contenido #relateditemlist{
list-style-type:none;
}
#contenido hr{
color:#FFFFFF;
}
#contenido #relateditemtitle{
text-transform:uppercase;
font-size:12px;
}
#contenido #poweredby{
color:#FFFFFF;
font-size:0pt;
}
#contenido #JOSC_formpos{
color:#000000;
font-family:"Arial Narrow", "Arial Rounded MT Bold", "Arial Unicode MS";
font-size:8pt;
height:100%;
background:none;
}
#contenido #JOSC_formpos .onlyregistered{
color:#000000;
}
#contenido .small, .createdate{
padding-bottom:10px;
}
#contenido .modifydate{
padding-top:10px;
}
#contenido .article_column{
padding:0 5px;
}
#contenido .readon {
font-size:8pt;
text-align:center;
}
#espaciobanner {
overflow:hidden;
font-family:"Arial Narrow", "Arial Rounded MT Bold", "Arial Unicode MS";
font-size:11pt;
font-weight:normal;
float:left;
width:100%;
text-align:center;
padding-bottom:20px;
padding-top:20px;
}
#footer {
bottom:0px;
font-family:"Arial", "Arial Rounded MT Bold", "Arial Unicode MS";
font-size:10pt;
font-weight:bold;
color:#000000;
width: 100%;
clear: both;
background-image: url(../images/hierba.png);
background-repeat: no-repeat;
background-position: 3px bottom;
float: left;
margin-top: 0px;
margin-right: 0px;
margin-bottom: 0px;
margin-left: 0px;
padding-top:0px;
overflow:hidden;
}
#footer #altominimo {
height:70px;
width:1px;
float: left;
clear:none;
}
#footer #copyright {
float:right;
clear:none;
padding-right:10px;
padding-top:35px;
text-align:left;
width:auto;
overflow:auto;
background:url(../images/transparente_der.png) no-repeat;
background-position:right bottom;
margin-right:30px;
}
#footer #contenidopie {
float:right;
clear:none;
padding-top:33px;
text-align:right;
width:auto;
overflow:hidden;
}
#footer #contenidopie .moduletable{
text-align:right;
padding-left:10px;
background-image:url(../images/transparente_izq.png);
background-repeat:no-repeat;
background-position:right bottom;
}
#footer #contenidopie .mainlevel{
padding-right:10px;
}
#footer a:link, a:visited{
color:#000000;
text-decoration:none;
}
#footer a:hover{
color:#666666;
text-decoration:none;
}
#firma{
text-align:right;
background-image:url(../images/sombrafirma.png);
background-repeat:no-repeat;
background-position: 2px top;
width: 711px;
margin-top: 0px;
margin-right: auto;
margin-bottom: 0px;
margin-left: auto;
padding: 0px;
height: 50px;
}
#firma img {
margin-top:10px;
border:none;
}