慢慢展开再慢慢收起的javascript广告效果

软件开发网 效果代码 *{margin:0;padding:0;} body {height:2000px;} #menu { width:220px; height:420px; position:absolute; z-index:1000; background:url(/upload/20080421090108362.gif) repeat-x top left; } #menu_h { float:right; } #menu_h img { cursor:pointer; } #menu_c { width:188