.nav{ width:100%; background-color:#1958a7; font-size:16px; color:#666; font-family:"Microsoft YaHei UI";  vertical-align:middle;   }
.nava{ background-position:center; display:block;font-family:"Microsoft YaHei UI";font-size:16px;  height:49px ;width:88px;line-height:49px;font-weight:300 ; color:#fff; text-decoration:none; }
.nava a{ display:block; height:49px ;width:88px;  line-height:49px; }
.nava a:link{ height:49px ;width:88px;line-height:49px;}
.nava a:visited{ height:49px ;width:88px;line-height:49px;}
.nava a:hover { display:block;  background-image:url(../images/m_03.png); background-repeat:no-repeat; background-position:center;height:49px ;width:88px;line-height:49px;}  
.navb{ font-size:16px;font-family:"Microsoft YaHei UI";display:block;   height:49px ;width:88px;line-height:49px;font-weight:300 ; background-repeat:no-repeat; background-position:center; color:#fff; }
.navb a{ display:block; font-weight:bold ; height:49px ;width:88px;/*background-image:url(../images/m_03.jpg);*/background-repeat:inherit;line-height:49px; 
text-decoration:none;}
.navba a:link{ display:block;  height:49px ;width:88px;line-height:49px;}
.navb a:visited{ display:block; height:49px ;width:88px; line-height:49px;}
.navb a:hover {  display:block;  background-image:url(../images/m_03.png);background-repeat:no-repeat;background-position:center; height:49px ;width:88px; line-height:49px;}