/*导航样式*/
#nav_c{
	width:1000px;
	float:left;
	margin-left:0px; 
	height:36px;
	margin-top:5px; 
	border:0px solid;
	border-radius:6px;
	background: #f0f0f0;
	border-style:solid;
	border-top-width:1px;
	border-top-color:#e0e0e0;
	
}
#nav {padding:0px auto; margin:0px auto;list-style:none; height:36px; width:1000px;position:relative; z-index:500; font-family:微软雅黑;}
#nav li{font-size:14px;font-family:微软雅黑; line-height:30px;}
#nav li.top {display:block; float:left; height:36px;font-weight: bold;width:100px;}
#nav li a.top_link {display:block; float:left; height:36px; margin:0px 15px 4px 21px;line-height:36px; color:#555555; text-decoration:none;  cursor:pointer;}
#nav li a.top_link span {float:left; display:block;height:36px;text-align:center; }
#nav li a.top_link span.down {float:left; display:block;height:36px;}

#nav li:hover a.top_link {color:#ffffff; margin:0px 15px 0px 21px;  background: url(/templets/default_diagnostics/img/lump_03.png) no-repeat;background-position:center;}
#nav li:hover a.top_link span {}
#nav li:hover a.top_link span.down {}

/* Default list styling */

#nav li:hover {position:relative; z-index:200;}

#nav li:hover ul.sub
{background-attachment:scroll;font-weight: normal;left:-30px; top:36px; background: #e5e5e5; border:1px solid #e0e0e0;white-space:nowrap; height:auto; z-index:300; width:170px;}
#nav li:hover ul.sub li
{display:block; height:24px; position:relative; float:left;width:170px; background:#e5e5e5;text-align:center;}
#nav li:hover ul.sub li a
{display:block;  height:24px; width:170px; line-height:24px; text-indent:5px; color:#666666; text-decoration:none;}
#nav li ul.sub li a.fly
{background:#d5d5d5 url(/templets/default_diagnostics/img/arrow.gif) 160px 10px no-repeat;width:170px;}
#nav li:hover ul.sub li a:hover 
{background:#aaaaaa; color:#ffffff; border:1px solid #cccccc;}
#nav li:hover ul.sub li a.fly:hover
{background:#d5d5d5 url(/templets/default_diagnostics/img/arrow_over.gif) 160px 10px no-repeat; color:#435892;}


#nav li:hover li:hover ul,
#nav li:hover li:hover li:hover ul,
#nav li:hover li:hover li:hover li:hover ul,
#nav li:hover li:hover li:hover li:hover li:hover ul
{left:168px; top:0px; background: #e5e5e5; width:170px; text-align:center; border:1px solid #cccccc; white-space:nowrap;  z-index:400; height:auto;}

#nav ul, 
#nav li:hover ul ul,
#nav li:hover li:hover ul ul,
#nav li:hover li:hover li:hover ul ul,
#nav li:hover li:hover li:hover li:hover ul ul
{position:absolute; left:-9999px; top:-9999px; width:0; height:0; margin:0; padding:0; list-style:none;}

#nav li:hover li:hover a.fly,
#nav li:hover li:hover li:hover a.fly,
#nav li:hover li:hover li:hover li:hover a.fly,
#nav li:hover li:hover li:hover li:hover li:hover a.fly
{color:#ffffff; } 

#nav li:hover li:hover li a.fly,
#nav li:hover li:hover li:hover li a.fly,
#nav li:hover li:hover li:hover li:hover li a.fly
{color:#666666;}