#menubg
{
    background-image: url(Images/MenuBG.jpg);
    background-repeat: repeat-x;
    width: 960px;
    padding-top: 3px;
}

ul#tabnav{
	list-style-type:none;
	margin:0px;
	padding-left:10px;					/* 左侧无空隙 */
	padding-bottom:23px;
	border-bottom:1px solid #6072f9;	/* 菜单的下边框 */
	font:bold 14px verdana, arial;
}
ul#tabnav li
{
    float: left;
    height: 22px;
    background-color: #C9DBF5;
    margin: 0px 3px 0px 0px;
    border: 1px solid #6072f9;
}
ul#tabnav a:link, ul#tabnav a:visited{
	display:block;						/* 块元素 */
	color:#6072f9;
	text-decoration:none;
	padding:5px 10px 3px 11px;
	letter-spacing: 0.2em;
}
ul#tabnav a:hover{
	background-color:#6072f9;
	color:#FFFFFF;
	letter-spacing: 0.2em;
}

div#home li.home, div#typicalcase li.typicalcase,	/* 当前页面的菜单项 */
div#technology li.technology, div#online li.online,
div#profressor li.profressor, div#hosinfo li.hosinfo,
div#studies li.studies{
	border-bottom:1px solid #FFFFFF;	/* 白色下边框，覆盖<ul>中的蓝色下边框 */
	color:#000000;
	background-color:#FFFFFF;
	letter-spacing: 0.2em;
}
div#home li.home a:link, div#home li.home a:visited,	/* 当前页面的菜单项的超链接 */
div#typicalcase li.typicalcase a:link, div#typicalcase li.typicalcase a:visited,
div#technology li.technology a:link, div#technology li.technology a:visited,
div#profressor li.profressor a:link, div#profressor li.profressor a:visited,
div#online li.online a:link, div#online li.online a:visited,
div#hosinfo li.hosinfo a:link, div#hosinfo li.hosinfo a:visited,
div#studies li.studies a:link, div#studies li.studies a:visited{
	color:#000000;
	background-color:#FFFFFF;
	letter-spacing: 0.2em;
}
div#home li.home a:hover, div#typicalcase li.typicalcase a:hover,
div#technology li.technology a:hover, div#online li.online a:hover,
div#profressor li.profressor a:hover, div#hosinfo li.hosinfo a:hover,
div#studies li.studies a:hover{
	color:#0066cc;
	letter-spacing: 0.2em;
}