body{
 margin: 0px;
 overflow-y : visible;
}
ul,li{margin:0px; padding:0px;list-style:none;}
p,td,li,div,span{font-size:12px;} 
img{border:0;margin:0;padding:0;}
.clr{clear:both;}
.zf0{height:0px;overflow:hidden;}.zf1{height:1px;overflow:hidden;}
.zf2{height:2px;overflow:hidden;}.zf5{height:5px;overflow:hidden;}
.zf8{height:8px;overflow:hidden;}.zf10{height:10px;overflow:hidden;}
.zf20{height:20px;overflow:hidden;}
.fred{color:red;}
.f12{font-size:12px;}
a{color:#3B3B3B;text-decoration:none;}

.clear{ display:block; float:none; clear:both; height:1px; overflow:hidden;}
/**头部推荐导航**/
#topnav{margin-top:10px;margin-left:auto;margin-right:auto;width:1000px;}
.tn_bb1{margin-left:13px;float:right;width:90px;height:22px;line-height:22px;background:url(http://www.yayale.net/images/integrated.png) -562px -43px;overflow:hidden;text-align:center;font-weight:bold;}
.tn_bb2{margin-left:13px;float:right;width:65px;height:22px;line-height:22px;background:url(http://www.yayale.net/images/integrated.png) -652px -43px;overflow:hidden;text-align:center;font-weight:bold;}

/**头部**/
.logohead{
 margin-top: 0px;
 margin-left:auto;
 margin-right:auto;
 width:1000px;
 height:79px;
}
.logo,.logo_adv,.logo_down{float:left;}
.logo{width:200px;}
.logo_adv{width:600px;height:57px;}
.logo_down{margin-top:10px;}
.logohead img{border:0px;}
/**头部**/
/**导航样式**/
.dh{
 margin-top: 0px;
 margin-left:auto;
 margin-right:auto;
 width:1000px;
 height:32px;
 background:url(http://www.yayale.net/images/dh_bg.gif);
 background-repeat: x-repeat;
}
.dh_tab
{
 margin:0;
 margin-left:4px;
 padding:6px 0px;
 list-style-type:none;
 height:20px;
 font-size:14px;
 font-weight:bold;
}

.dh_tab li
{
 float:left;
 display:inline;
 margin:0px; padding:0px 12px 0px 12px;
 height:18px;
 background:url(http://www.yayale.net/images/dh_tab_bg.gif);
 background-position: 68px 0px; 
 background-repeat: no-repeat;
}
/**最后一个没有“|”**/
.dh_tab li.nobg {background:none;}
.dh_tab li.soft {float:left;background:none;}
.dh_tab a{font-size:14px;text-decoration:none;color:#fff;}
/**导航样式**/
#content{
 margin-left:auto;
 margin-right:auto;
 width:1000px;
 background:url(about_us_middle.gif);
}
.about_left{
float:left;
width:165px;
height:495px;
overflow:hidden;
}

.about_left li
{
 float:left;
 display:inline;
 margin:20px 20px 0px 20px; 
 padding:0px;
 width:120px;
 height:18px;
 background:url(http://www.yayale.net/images/dh_tab_bg.gif);
 background-position: 68px 0px; 
 background-repeat: no-repeat;
}

.about_right{
float:left;
width:795px;
padding:20px;
}

.about_top{
 width:1000px;
 height:18px;
 background:url(about_us_top.gif);
}
.about_bottom{
 width:1000px;
 height:14px;
 background:url(about_us_bottom.gif);
}

#footer{
 margin-left:auto;
 margin-right:auto;
 width:1000px;
}
.bomlogo{
	background:url(http://www.yayale.net/images/logo.gif) no-repeat;
	width:197px;
	height:83px;
	float:left;
	margin:10px 10px;
	margin-top:20px;
}
.bomright{
	padding-top:10px;
	float:left;
	width:758px;
	line-height:1.8;
	color:#999;
	margin-left:12px;
	display:inline;
}