.menu1 {
	background-image: url(../images/menu1.gif);
	background-repeat: no-repeat;
}
.menu2 {
	background-image: url(../images/menu3.gif);
	background-repeat: no-repeat;
}
.menu1 a:hover {
	background-image: url(../images/menu1.gif);
	background-repeat: no-repeat;
	background-position: 0px -21px;
}
.menu2 a:hover {
	background-image: url(../images/menu3.gif);
	background-repeat: no-repeat;
	background-position: 0px -21px;	
}
.subject {
	clear: both;
	float: left;
	height: auto;
	width: 835px;
	margin-bottom: 20px;
}
.sub_left {
	float: left;
	height: auto;
	width: 330px;
}