这是一款仿百度首页jQuery滑动伸缩展开的添加服务效果，其实是一款伸缩菜单，只不过这个菜单有点特别，只从一头向另一头伸展出去，菜单的伸缩效果平滑，设计精美。
运行效果截图如下：
在线演示地址如下：
具体代码如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>添加服务</title> <style> *{padding:0;margin:0;font:12px/26px "微软雅黑";} a,a:hover{text-decoration:none;color:#ccc;} dl{margin:0 auto;border:1px solid #fff;float:left;position:absolute;left:50%;color:#ccc;margin:100px 0 100px -45px ;overflow:hidden;} dl.open{margin-left:-200px;} dl.open dt{background:url(images/s_add_all_3f6f39e5.png) 0 0 no-repeat;} dl dt{width:94px;height:30px;line-height:30px;text-align:center;cursor:pointer;position:relative;z-index:10;float:left; background:#fff;} dl dd{display:none;height:28px;float:left;} dl dd a{float:left;display:block;height:28px;line-height:28px;padding:0 15px 0 35px;position:relative;left:-300px;border-top:1px solid #E5E5E5;border-bottom:1px solid #E5E5E5;background:url(images/s_add_all_3f6f39e5.png) no-repeat;} dl dd .nav{background-position:13px -35px;} dl dd .hot{background-position:13px -61px;} dl dd .app{background-position:13px -87px;} dl dd .fresh{background-position:13px -113px;border-right:1px solid #E5E5E5;} dl dd .nav:hover{background-position:-104px -35px;} dl dd .hot:hover{background-position:-104px -61px;} dl dd .app:hover{background-position:-104px -87px;} dl dd .fresh:hover{background-position:-104px -113px;} </style> </head> <body> <dl> <dt>+添加服务</dt> <dd><a href="#">导航</a><a href="#">实时热点</a><a href="#">应用</a><a href="#">新鲜事</a></dd> </dl> </body> <script type="text/javascript" src="https://www.jb51.net/jquery-1.6.2.min.js"></script> <script> window.onload = function(){ var Close = function(event){ $('dd a').animate({left:-400}); setTimeout('$("dl").css("margin-left",-45);$("dl").removeClass("open")',300) }; var Open = function(event){ $("dd").show(); var dl_W=$("dl").width(); $("dl").addClass("open").css("margin-left",-dl_W/2); $('dd a').animate({left: 0},300); Stop(event); }; var Stop = function(event){ e = event || window.event; if(e.stopPropagation){ e.stopPropagation(); }else { e.cancelBubble = true; } }; $(document).bind('click', Close); $('dt').bind('click',Open); $('dd').bind('click',Stop); }; </script> </html>