.main{position:relative;}
.t1{position:relative;}
	.gw{position:absolute;width:151px;height:33px;background:url('cc.png');line-height:33px;text-align:center;color:#ffffff;font-size:14px;right:0px}
	.gw a{color:#ffffff}
.nav{position:fixed;_position:absolute;width:157px;height:387px;background:url('bb.png');top:200px;margin-left:1002px;overflow:hidden;}
	.nav a{display:block;width:122px;height:42px;background-image:url('aa.png');text-indent:-999px;margin-top:5px;margin-left:18px;}
	.n_1{margin-top:15px !important;}
	.n_1:hover,.n_1.on{background-position:-123px 0px}
	.n_2{background-position:0px -46px}
	.n_2:hover,.n_2.on{background-position:-123px -46px}
	.n_3{background-position:0px -92px}
	.n_3:hover,.n_3.on{background-position:-123px -92px}
	.n_4{background-position:0px -138px}
	.n_4:hover,.n_4.on{background-position:-123px -138px}
	.n_5{background-position:0px -184px}
	.n_5:hover,.n_5.on{background-position:-123px -184px}
	.n_6{background-position:0px -230px}
	.n_6:hover,.n_6.on{background-position:-123px -230px}
	.n_7{background-position:0px -276px}
	.n_7:hover,.n_7.on{background-position:-123px -276px}