*{margin:0;padding:0;border:0;}
#nav { width: 210px; line-height: 23px; list-style-type: none; text-align: left; font-family: Arial,  宋体; font-size: 12px; /*定义整个ul菜单的行高和背景色*/ }
/*==================一级目录===================*/
#nav li a { width: 208px; display: block;  /*Width(一定要)，否则下面的Li会变形*/   font-weight:bolder;  }
#nav li { background: #F7F7F7;  border: 1px solid #E4E4E4;  float: left; margin-top: 2px; width: 208px;  text-indent: 20px;}
#nav li a:hover{ background: #CC0000; /*一级目录onMouseOver显示的背景色*//*一级目录onMouseOver显示的背景色*/ }
#nav a:link  { color:#575757; text-decoration: none; }
#nav a:visited  { color: #666; text-decoration: none; }
#nav a:hover  { color: #FFF; text-decoration: none; font-weight: bold; }
/*==================二级目录===================*/
#nav li ul { list-style: none; text-align: left; }
#nav li ul li{ background: #fff; /*二级目录的背景色*/ margin-top: 1px;  background-image: url(icon3.gif); background-position: 24px  ; background-repeat: no-repeat;}
#nav li ul li a{  text-indent: 45px; width: 208px;  }
/*下面是二级目录的链接样式*/
#nav li ul li a:link  { color:#939393;text-decoration: none; }
#nav li ul li a:visited  { color: #666; text-decoration: none; }
#nav li ul li a:hover {  text-decoration: none; color:#939393; background: #fff;background-image: url(icon4.gif); background-position: 24px  ; background-repeat: no-repeat; }
/*==============================*/
#nav li:hover ul { left: auto; }
#nav li.sfhover ul { left: auto; }
#content { clear: left; }
#nav ul.collapsed { display: none; }