@charset="UTF=8";

*{
    margin: 0;
	padding: 0;
}
ul {
    list-style-type: none;
}
a {
    text-decoration: none;
}
img {
    border: 0;
}
em {
    visibility:hidden;
}
#nav {
    width: 850px;
	height: auto;
	padding: 50px 0 0 50px;
}
#nav li {
    display: inline;
	float:left;
}
#nav li a{
	display: block;
	width: 170px;
	height: 35px;
}
#nav li#ai {
    background-image: url(images/01.png);
	background-repeat: no-repeat;
	background-position: left top;
}
#nav li#ai a:hover {
    background-image: url(images/01.png);
    background-position: left bottom;
}
#nav li#ps {
    background-image: url(images/02.png);
	background-repeat: no-repeat;
	background-position: left top;
}
#nav li#ps:hover {
    background-image: url(images/02.png);
    background-position: left bottom;
}
#nav li#hcss {
    background-image: url(images/03.png);
	background-repeat: no-repeat;
	background-position: left top;
}
#nav li#hcss a:hover {
    background-image: url(images/03.png);
    background-position: left bottom;
}
#nav li#dwea {
    background-image: url(images/04.png);
	background-repeat: no-repeat;
	background-position: left top;
}
#nav li#dwea a:hover {
    background-image: url(images/04.png);
    background-position: left bottom;
}
#nav li#fla {
    background-image: url(images/05.png);
	background-repeat: no-repeat;
	background-position: left top;
}
#nav li#fla a:hover {
    background-image: url(images/05.png);
    background-position: left bottom;
}