body { margin:0;font-size: 12px;text-align:center}
.caption1 {	font-size: 24px;font-weight: bold;font-family: "宋体";}
.caption2 {font-size: 14px;	font-weight: bold;}
.caption3 {font-size: 14px;}
a {color: #000000;}
a:link {text-decoration: none;}
a:visited {	text-decoration: none;	}
a:hover {text-decoration: underline;}
a:active {text-decoration: none;	}
.nav {
    margin:2px 0px 4px 0px; padding:0px;
    width:899px; height:30px; 
    text-align:left;
    background: url(../images/top_menu_bg.jpg) repeat-x;
    border:solid 1px #D4D4D4
}
.nav ul {
    margin:0px; padding:0px;
    list-style-type:none;
}
.nav ul li{text-align:left}
.nav ul li table {width:60px;border-collapse:collapse;border:solid 1px #D4D4D4;background:#f7f7f7;text-align:left;z-index:500px;position:absolute}
.nav ul li table {display:none;}
/*.nav ul li:hover table,
.nav ul li a:hover table {display:block;width:100%;}*/
.nav ul li {float:left;width:64px;display:block;}
.nav ul li a {display:block; line-height:30px; font-size:12px;text-align:center;color:#555;text-decoration:none}
.nav ul li table a {text-align:left;padding-left:3px; background:#f7f7f7; line-height:20px;}
.nav ul li table a:hover {color:red; background:#ffffff;}