Ciao,
ho un problema: la colonna di destra pur avendo l' attributo height: 100% non prende tutta
l' altezza del container

ecco la pagina in layout fluido

http://www.provadialex.altervista.org/luca-bernardi.it/

e vi posto il codice

codice:
body
{
	 background-color:#9CF;
	color: #000;
	font-family:Verdana, Arial, Helvetica, sans-serif;
	font-size: 90%;
	height:100%;
    margin: 0;


}
#struttura
{

	color: #000;
	background-color:#FFFFFF;
	line-height: 180%;
	text-align: left;
	width: 60%;
	height: 100%;

	


}
#header
{
     background-color:#9CF;
	background-image: url(img/layout/header.jpg);
	background-position: left bottom;
	background-repeat: no-repeat;
	border-bottom: 1px solid #CCC;
	height: 170px;
	margin-top:0em;
}


#menu {
	float:right;
	height: 100%;
	top:170px;
	width:25%;
	background-color:#B4E0FF;

	border-right: 1px dashed #CFF;

}


#menu ul
{
	list-style: none;
	margin: 0;
	padding: 0;
}
#menu li
{
	display: inline;
	font-size: 1.1em;
	margin: 0;
	padding: 0;
}
#menu a:link, a:visited
{
	background: #369;
	border: 1px solid #036;
	color: #fff;
	display: block;
	padding: 0.3em 0.6em;
	padding-left: 1.5em;
	text-decoration:none;
	font-style: italic;
}
#menu a:hover,a:focus, a:active
{
	background:#B4E0FF;
	border-color: #CFF;
	color: #036;
	padding: 0.3em 0.6em;
	padding-left: 1.5em;
	font-weight: bold;
    font-style: normal;
	font-style:normal;
}




#content
{
	background: #fff;
	background-image:url(img/layout/header2.gif);
	background-repeat:no-repeat;
	background-position:left top;
	color: #000;
	position:relative;
    width:70%;
    height:100%;
	



}
#content p
{
	font-size: 90%;
	line-height: 1.8em;
	padding-right: 2em;
	margin-left: 1em;
	padding-top: 6em;

}



#footer {

position: relative;
background-color:#B4E0FF;
color: #000;
width: 100%;
height:3em;
margin-bottom:0;
background-image:url(img/layout/footer.jpg);
background-repeat:repeat-x;
background-position:bottom;



}