#nav li ul {
  display: none;
  position: absolute;
 padding-right:18%; width:100%;
  background-color:#f4f4f4;/* IE6和部分IE7内核的浏览器(如QQ浏览器)下颜色被覆盖 */
  background-color:rgba(244,244,244,0.8); /* IE6和部分IE7内核的浏览器(如QQ浏览器)会读懂，但解析为透明 */
  z-index:999;
  
  padding-top:20px;
  padding-bottom:20px;
  }
#nav li:hover ul {
  display: block;
  }
#nav li ul li {
 float:right; padding:10px 20px;
  height:40px; 
  }
#nav li ul li a { clear:both; font-family:"微软雅黑", "黑体";
  display: inline-block; font-size:16px; font-weight:700px;
  height:40px; line-height:40px; text-align:left; color:#565656;
  }
  .menulia{ clear:both; font-size:16px; font-weight:700px;}
#nav li ul li a {display: block;}
#nav li ul li a:hover {
  background:url(nav_bg.png);
  color: #fff;
  }
#nav li ul li img{ margin-top:3px}
.nav_en{ font-family:Arial}
.nav_en a{ letter-spacing:0}

.menglui{ float:left; width:700px; height:110px; }