ul#nav_main {
	list-style-type:none;
	position: relative;
	width: 660px;
	height: 54px;
	padding: 0;
	background:url(../images/li_nav_main);
	margin-top: 73px;
	margin-right: 15px;
	margin-bottom: 0;
	margin-left: 0px;
	overflow:hidden;
	float: right;
}

li#nm_1{position:absolute;
top: 0px;
left: 0px;
width: 155px;
height: 54px;
background:url(../images/li_nav_main.jpg) 0px 0px;}

li#nm_2{position:absolute;
top: 0px;
left: 155px;
width: 160px;
height: 54px;
background:url(../images/li_nav_main.jpg) no-repeat -155px 0px;}

li#nm_3{position:absolute;
top: 0px;
left: 315px;
width: 136px;
height: 54px;
background:url(../images/li_nav_main.jpg) no-repeat -315px 0px;}

li#nm_4{position:absolute;
top: 0px;
left: 450px;
width: 210px;
height: 54px;
background:url(../images/li_nav_main.jpg) no-repeat -450px 0px;}


ul#nav_main a {display:block;
width: 100%;
height: 54px;
text-indent: -9999px;
text-decoration:none;
overflow:hidden;
}

li#nm_1 a:hover { background: url(../images/li_nav_main.jpg) no-repeat 0px -54px; }
li#nm_2 a:hover { background: url(../images/li_nav_main.jpg) no-repeat -155px -54px; }
li#nm_3 a:hover { background: url(../images/li_nav_main.jpg) no-repeat -315px -54px; }
li#nm_4 a:hover { background: url(../images/li_nav_main.jpg) no-repeat -450px -54px; }