img { border: 0; }
.header-nav {  max-width: 1920px; margin: 0 auto; position: relative; }
.navIL, .navIM, .logoPNG { background-image:url("index-img/nav.gif"); }
.navSub dt, .navSub, li.nav3, a.nav4:hover, .navSub a:hover { background-image: url("index-img/navSub.png"); background-repeat: no-repeat;_background-image: url("index-img/navSub.jpg") ; }
.topNav { height: 75px; width: 100%; position: absolute; left: 0; top: 0; margin: 0 auto; overflow: hidden; z-index: 4; }
.topNav2 { width: 200%; position: absolute; left: -50%; top: 0; }
.navBox { width: 1920px; margin: 0 auto; position: relative; }
.navIndexBg { width: 1920px; position: absolute; height: 75px; left: 0; top: 0; }
.navIL { width: 810px; position: absolute; left: 0; top: 0; height: 57px; background-repeat: repeat-x; background-position: 0 -75px; }
.navIR { left: 1110px; }
.navIM { left: 810px; position: absolute; width: 300px; height: 57px; top: 0; }
.navMain { width: 1280px; margin: 0 auto; height: 242px; position: relative; }
.navIndex { padding-left:152px; height: 55px; }
    .navIndex li { color:#FFF; font-size: 14px; float: left; line-height: 50px; height: 55px; width: 100px; text-align: center; font-weight:bold}
	.navIndex li a:link,.navIndex li a:visited{ color:#fff}
    .navIndex li a:hover{color:#F60; text-decoration:none;}
li.nav3, a.nav4:hover { background-position: -1330px -155px; _background:none }
.navIndex a { color: #000; display: block; width: 100px; height: 50px; }
    .navIndex a:hover { color: #ff3b00; }
.nav1 { margin-right: 300px; }

.navSub { height: 155px; display: none; background-position:-20px 0; font-weight:bold;}
    .navSub a { color: #666; display: block; height: 26px; margin: 0 auto; width: 100px; }
        .navSub a:hover { color: #F60; background-position: -1330px 0;}
    .navSub dl { width: 100px; float: left; text-align: center; line-height: 26px; position: relative; padding-top: 23px; height:130px}
    .navSub dt { position: absolute; width: 100%; height: 100%; left: 0; top: 0; text-indent: -5000px; background-position: -1330px 0; display: none; }
    .navSub dd { position: relative; }
.nav2 { margin-left: 264px; _margin-left: 132px; }
.header-nav { height: 75px; }
.logoBox { position: relative; z-index: 3; }