body
{
	font-family: tahoma, verdana, sans-serif;
	font-size: 14px;
	text-align: left;
	background-color: #336699;
}
div#banner
{
	background: url('http://www.usthb.dz/fmath/squelettes/img/head.jpg');
	border: 1px solid black;
	float: right;
	width: 900px;
	height: 100px;
	margin: 0 auto 5px auto;

}


div#banner1
{
	background: url('http://www.usthb.dz/fmath/squelettes/img/fon_gp.jpg');
	border: 1px solid black;
	float: right;
	width: 900px;
	height: 100px;
	margin: 0 auto 5px auto;

}

div#banner2
{
	background: url('http://www.math.vt.edu/people/schmalej/math.jpg');
	border: 1px solid black;
	width: 950px;
	height: 100px;
	margin: 0 auto 5px auto;

}

div#wrapper
{
	width: 950px;
	padding: 0;
	border: none;
	margin: 0 auto 0 auto;
}



div#nav
{
	float: left;
	background: white;
	/* Width is: 850 (banner size) - 20 (total margin) - 2 (border size) - 540 (#content size) */
	width: 180px;
	border: 1px solid black;
	margin: 0px 0px 0px 0px;
	padding: 0;
}
div#content
{
	background: white;
	float: right;
	border: 1px solid black;
	width: 890px;
	padding: 5px 5px 5px 5px;
	margin: 0 0 0 0;
}

div#content2
{
	background: white;
	float: right;
	border: 1px solid black;
	width: 940px;
	padding: 5px 5px 5px 5px;
	margin: 0 0 0 0;
}


div#imglink
{
	background: #336699;
	float: left;
	border: none;
	width: 950px;
	padding: 5px 5px 5px 5px;
	margin: 0 0 0 0;
}

#nav a
{
	display: block;
	border-bottom: 1px solid #dfdfdf;
	padding: 3px 10px 3px 10px;
	text-decoration: none;
	color: #233f5f;
	font-size: 14px;
}
#nav a:hover
{
	background: #dfeeff;
	color: #039;
	cursor: pointer;
}

#nav a.menuhead, #nav a.menuheadOpen
{
	color: #233f5f;
	font-size: 14px;
	padding-left: 10px;
}
#nav a.menuhead
{
	background: white  no-repeat 5px 50%;
}
#nav a.menuhead:hover
{
	background: #dfeeff  no-repeat 5px 50%;
	color: #039;
}
#nav a.menuheadOpen
{
	background: white  no-repeat 5px 50%;
}
#nav a.menuheadOpen:hover
{
	background: #dfeeff  no-repeat 5px 50%;
	color: #039;
}

#nav .submenu
{
	display: block;
	padding: 5px 5px 5px 15px;
	border-bottom: 1px solid #dfdfdf;
	
}

#nav .submenu a
{
	display: block;
	border: none;
	padding: 3px 10px 3px 10px;
	text-decoration: none;
	color: #336699;
	font-size: 12px;
}

#nav .submenu a:hover{
	text-decoration: underline;
	color: #039;
	background: none;
}

h1
{
	font-family: 'Bitstream Charter', Georgia, Times, 'Times New Roman', serif;
	font-size: 24px;
	font-weight: bold;
	display: block;
	border-bottom: 4px double black;
	color: #336699;
}
h2
{
	font-family: 'Bitstream Charter', Georgia, Times, 'Times New Roman', serif;
	font-size: 18px;
	font-weight: bold;
	display: block;
	border-bottom: 1px solid black;
	color: #333366;
}

h3
{
	font-size: 16px;
	font-weight: bold;
	display: block;
}

p
{
	padding-left: 15px;
}	

.indented
{
	margin-left: 60px;
}

div.column
{
	float: left;
	margin: 0 0 15px 15px;
	width: 30%;
}
<
div.column span, p span
{
	margin-left: -10px;
	font-weight: bold;
	display: block;
}
>
img
{
	border:  0px solid black;
	padding:0;
}

.totop, .personPhoto
{
	float: right;
	margin: 0;
	padding: 0;
}
.personPhoto img
{
	border: 1px solid black;
}
.personPhoto ul
{
	list-style: none inside url(../graphics/bullet.png);
	margin: 0;
	padding: 0;
}
.personPhoto ul li
{
	margin: 0;
	padding: 0;
}
li span
{
	font-weight: bold;
}

a:link
{
	text-decoration: none;
	color: #336699;
}
a:visited
{
	text-decoration: none;
}
a:hover
{
	text-decoration: underline;
}

a:hover span
{
	text-decoration: underline;
}
<
table
{
	
	font-family: tahoma, verdana, sans-serif;
	font-size: 14px;
	border: none;
}
>

td span
{
	text-decoration: underline;
}