【求助】UL下的子菜单会自动内联？
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> </head> <style>ul { margin: 0px; padding: 0px; background:#333; width:949px;}ul li{float:left; display:inline; list-style:none; height:30px; width:100px;}ul li ul{display:block ;} </style> <div style="width:949;"><ul><li><a href="#"><span>ALL</span></a> <ul> <li style="display:block"><a href="#"><span>all</span></a></li> <li style="display:block"><a href="#"><span>all</span></a></li> <li style="display:block"><a href="#"><span>all</span></a></li> <li style="display:block"><a href="#"><span>all</span></a></li> </ul> </li><li><a href="#"><span>name</span></a></li><li><a href="#"><span>name</span></a></li><li><a href="#"><span>name</span></a></li><li><a href="#"><span>name</span></a></li><li><a href="#"><span>name</span></a></li><li><a href="#"><span>name</span></a></li></ul></div><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> </head> <style>ul.menu { margin: 0px; padding: 0px; background:#333; width:949px;}ul.menu li{float:left; display:inline; list-style:none; height:30px; width:100px;}ul.menu li ul{display:block ;} </style> <div style="width:949;"><ul class="menu"><li><a href="#"><span>ALL</span></a> <ul> <li style="display:block"><a href="#"><span>all</span></a></li> <li style="display:block"><a href="#"><span>all</span></a></li> <li style="display:block"><a href="#"><span>all</span></a></li> <li style="display:block"><a href="#"><span>all</span></a></li> </ul> </li><li><a href="#"><span>name</span></a></li><li><a href="#"><span>name</span></a></li><li><a href="#"><span>name</span></a></li><li><a href="#"><span>name</span></a></li><li><a href="#"><span>name</span></a></li><li><a href="#"><span>name</span></a></li></ul></div>