#nav { 
    margin:0; padding:0px; width:5px; height:auto;
    list-style-type: none; 
    text-align:left; 
    /*定义整个ul菜单的行高和背景色*/ 
} 

/*==================一级目录===================*/ 
#nav a { 
    width: 160px;  
    display: block; 
    /*Width(一定要)，否则下面的Li会变形*/ 
} 

#nav li { 
    float:left; color:#FFFFFF 
	margin:0; padding:0px; width:12px; height:auto; font-size:11px;
} 


#nav li a:hover{ 
} 

#nav a:link  { 
    color:#000000; text-decoration:none; 
} 
#nav a:visited  { 
    color:#000000;text-decoration:none 
} 
#nav a:hover  { 
    color:666666;text-decoration:none;font-weight:normal; 
} 

/*==================二级目录===================*/ 
#nav li ul { 
    list-style:none; 
    text-align:left; 
    margin:0; padding:0px;
	} 

#nav li ul a{ 
         padding-left:5px; 
         width:160px; 
    /* padding-left二级目录中文字向右移动，但Width必须重新设置=(总宽度-padding-left)*/ 
} 

/*下面是二级目录的链接样式*/ 

#nav li ul a:link  { 
    color:#000000; text-decoration:none 
} 
#nav li ul a:visited  { 
    color:#000000;text-decoration:none 
} 
#nav li ul a:hover { 
    color:#666666; 
    text-decoration:none; 
    font-weight:normal; 
    /* 二级onmouseover的字体颜色、背景色*/ 
} 

/*==============================*/ 
#content { 
    clear: left;  
} 

#nav ul.collapsed{ 
    display: none;
	margin:0; padding:0px; width:5px; height:auto;
    list-style-type: none; 
    text-align:left; 
}