/*头部开始*/
#header { width: 960px; height: 122px; background: url(../images/bannerbk.jpg);}
	#logo { width: 207px; height: 55px; float: left; margin: 27px 0 0 40px; display: inline;}
	#nav { width: 604px; height: 36px; padding: 7px 0 0 5px; float: left; margin: 50px 0 0 104px;}
		#nav li { float: left; margin-left: 5px; text-align: center; line-height: 36px; position:relative}
		.nav1, .nav2, .nav3 { font-size: 16px; font-weight: bold;	color: #fff; text-decoration: none; height: 36px; display: block; position: relative;}
			.nav1 { width: 79px; background: url(../img/nav1.gif);}
			.nav2 { width: 93px; background: url(../img/nav2.gif);}
			.nav3 { width: 98px; background: url(../img/nav3.gif);}
			.nav1:hover { background: url(../img/nav1_hover.gif); color:red;}
			.nav2:hover { background: url(../img/nav2_hover.gif); color:red;}
			.nav3:hover { background: url(../img/nav3_hover.gif); color:red;}
			.nav2_1 { width: 610px; height: 29px; line-height: 29px; position: absolute; top: 36px; left: -200px; }
			#nav2_5 { width: 288px; height: 29px; line-height: 29px; position: absolute; top: 36px; left: -150px; }
			.nav2_1 a { text-decoration: none; color: #fff; font-size: 12px; word-spacing: 13px; margin:0px 3px;}
			.nav2_1 a:hover { text-decoration: underline; color: #000;}
/*头部结束*/