.menu a.m_home {width:112px;height:42px;background:url(../images/nav_vn.png) no-repeat}
.menu a.m_home:hover {width:112px;height:42px;background:url(../images/nav_vn.png) no-repeat 0 -42px}
.menu a.m_intro {width:112px;height:42px;background:url(../images/nav_vn.png) no-repeat -112px 0}
.menu a.m_intro:hover {width:112px;height:42px;background:url(../images/nav_vn.png) no-repeat -112px -42px}
.menu a.m_product {width:128px;height:42px;background:url(../images/nav_vn.png) no-repeat -224px 0}
.menu a.m_product:hover {width:128px;height:42px;background:url(../images/nav_vn.png) no-repeat -224px -42px}
.menu a.m_tech {width:128px;height:42px;background:url(../images/nav_vn.png) no-repeat -352px 0}
.menu a.m_tech:hover {width:128px;height:42px;background:url(../images/nav_vn.png) no-repeat -352px -42px}
.menu a.m_news {width:94px;height:42px;background:url(../images/nav_vn.png) no-repeat -478px 0}
.menu a.m_news:hover {width:94px;height:42px;background:url(../images/nav_vn.png) no-repeat -478px -42px}
.menu a.m_career {width:128px;height:42px;background:url(../images/nav_vn.png) no-repeat -572px 0}
.menu a.m_career:hover {width:128px;height:42px;background:url(../images/nav_vn.png) no-repeat -572px -42px}
.menu a.m_contact {width:100px;height:42px;background:url(../images/nav_vn.png) no-repeat -708px 0}
.menu a.m_contact:hover {width:100px;height:42px;background:url(../images/nav_vn.png) no-repeat -708px -42px}


.menu ul li a.menu_hcurent{width: 112px;height: 42px;background: url(../images/nav_vn.png) no-repeat  0 -42px;}

.menu ul li a.menu_curent{width: 112px;height: 42px;background: url(../images/nav_vn.png) no-repeat -112px -42px;}

.menu ul li a.menu_curent2{width: 128px;height: 42px;background: url(../images/nav_vn.png) no-repeat -224px -42px;}

.menu ul li a.menu_curent3{width: 128px;height: 42px;background: url(../images/nav_vn.png) no-repeat -352px -42px;}

.menu ul li a.menu_curent4{width: 94px;height: 42px;background: url(../images/nav_vn.png) no-repeat -478px -42px;}
.menu ul li a.menu_curent5{width: 128px;height: 42px;background: url(../images/nav_vn.png) no-repeat -572px -42px;}
.menu ul li a.menu_curent6{width: 128px;height: 42px;background: url(../images/nav_vn.png) no-repeat -708px -42px;}