/* ================================================================ 
This copyright notice must be kept untouched in the stylesheet at 
all times.

The original version of this stylesheet and the associated (x)html
is available at http://www.stunicholls.com/menu/pro_drop_2.html
Copyright (c) 2005-2007 Stu Nicholls. All rights reserved.
This stylesheet and the associated (x)html may be modified in any 
way to fit your requirements.
=================================================================== */

.preload1 {background: url(three_1.gif);}
.preload2 {background: url(three_1a.gif);}
/*主菜单*/
#nav { float:right; padding:0; margin:0; list-style:none; height:97px; position:relative; z-index:999; font-family:微软雅黑, verdana, sans-serif;}
#nav li.top {display:block; float:left; height:97px;}
#nav li a.top_link {display:block; float:left; height:97px; line-height:97px; color:#333333; text-decoration:none; font-size:18px; padding:0px; cursor:pointer;background: url(/images/menu_b1.png);}
#nav li a.top_link span {float:left; display:block; padding:0 10px 0 10px; height:97px; background: url(/images/menu_b1.png) right top no-repeat;}
#nav li a.top_link span.down {float:left; display:block; padding:0 10px 0 10px; height:97px; background: url(/images/menu_b1.png) no-repeat right top;}
/*鼠标经过*/
#nav li:hover {position:relative; z-index:200;}
#nav li:hover a.top_link {color:#1DD2AF; background: url(/images/menu_b2.png);}
#nav li:hover a.top_link span {background:url(/images/menu_b2.png);}
#nav li:hover a.top_link span.down {background:url(/images/menu_b2.png);}

/* 一级下拉菜单样式 */
#nav li:hover {position:relative; z-index:200;}
#nav li:hover ul.sub
{left:1px; top:90px; background: #eeeeee; padding:3px; border:1px solid #2C3E50; white-space:nowrap; width:180px; height:auto; z-index:300;}
#nav li:hover ul.sub li
{display:block; height:30px; line-height:30px; position:relative; float:left; width:180px; font-weight:normal;}
#nav li:hover ul.sub li a
{display:block; font-size:14px; width:178px; height:30px; line-height:30px; text-indent:5px; color:#000; text-decoration:none;border:0px solid #bbd37e;}
#nav li ul.sub li a.fly
{background:#eeeeee url(arrow.gif) 170px 6px no-repeat; height:24px; line-height:24px; padding:3px 0px 3px 0px;}
#nav li:hover ul.sub li a:hover 
{background:#2C3E50; color:#fff; border-color:#fff; height:24px; line-height:24px; padding:3px 0px 3px 0px;}
#nav li:hover ul.sub li a.fly:hover
{background:#2C3E50 url(arrow_over.gif) 170px 6px no-repeat; height:24px; line-height:24px; color:#fff; padding:3px 0px 3px 0px;}

/*二级展开菜单样式*/
#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:180px; top:-4px; background: #eeeeee; padding:3px; border:1px solid #2C3E50; white-space:nowrap; width:180px; z-index:400; height:auto;}

/*三级展开菜单样式*/
#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;}

/*四级展开菜单样式*/
#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
{background:#2C3E50 url(arrow_over.gif) 170px 6px no-repeat; color:#fff; border-color:#fff;} 

/*五级展开菜单样式*/
#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
{background:#bbd37e url(arrow.gif) 170px 6px no-repeat; color:#000; border-color:#bbd37e;}