<div class="form" onclick="document.all.child1.style.display=(document.all.child1.style.display =='none')?'':'none'" ><span class="hand">>>考勤信息查询</span>
</div>
<div id="child1" class="child" style="display:none">
<a href="man_notice.jsp" target=rightFrame>按时间查询</a><br />
<a href="stu_add.jsp" target=rightFrame>按学号查询</a><br />
<a href="#">按区队班级查询</a><br />
</div>
<head><title>1231</title>
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/* common styling */
/* set up the overall width of the menu div, the font and the margins */
.menu {
font-family: arial, sans-serif
width:750px
margin:0
margin:50px 0
}
/* remove the bullets and set the margin and padding to zero for the unordered list */
.menu ul {
padding:0
margin:0
list-style-type: none
}
/* float the list so that the items are in a line and their position relative so that the drop down list will appear in the right place underneath each list item */
.menu ul li {
float:left
position:relative
}
/* style the links to be 104px wide by 30px high with a top and right border 1px solid white. Set the background color and the font size. */
.menu ul li a, .menu ul li a:visited {
display:block
text-align:center
text-decoration:none
width:104px
height:30px
color:#000
border:1px solid #fff
border-width:1px 1px 0 0
background:#c9c9a7
line-height:30px
font-size:11px
}
/* make the dropdown ul invisible */
.menu ul li ul {
display: none
}
/* specific to non IE browsers */
/* set the background and foreground color of the main menu li on hover */
.menu ul li:hover a {
color:#fff
background:#b3ab79
}
/* make the sub menu ul visible and position it beneath the main menu list item */
.menu ul li:hover ul {
display:block
position:absolute
top:31px
left:0
width:105px
}
/* style the background and foreground color of the submenu links */
.menu ul li:hover ul li a {
display:block
background:#faeec7
color:#000
}
/* style the background and forground colors of the links on hover */
.menu ul li:hover ul li a:hover {
background:#dfc184
color:#000
}
</style>
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<style type="text/css">
/* styling specific to Internet Explorer IE5.5 and IE6. Yet to see if IE7 handles li:hover */
/* Get rid of any default table style */
table {
border-collapse:collapse
margin:0
padding:0
}
/* ignore the link used by 'other browsers' */
.menu ul li a.hide, .menu ul li a:visited.hide {
display:none
}
/* set the background and foreground color of the main menu link on hover */
.menu ul li a:hover {
color:#fff
background:#b3ab79
}
/* make the sub menu ul visible and position it beneath the main menu list item */
.menu ul li a:hover ul {
display:block
position:absolute
top:32px
left:0
width:105px
}
/* style the background and foreground color of the submenu links */
.menu ul li a:hover ul li a {
background:#faeec7
color:#000
}
/* style the background and forground colors of the links on hover */
.menu ul li a:hover ul li a:hover {
background:#dfc184
color:#000
}
</style>
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</head>
<body>
<div class="menu">
<ul>
<li><a class="hide" href="../menu/index.html">DEMOS</a>
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<a href="../menu/index.html">DEMOS
<table><tr><td>
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<ul>
<li><a href="#">zero dollars</a></li>
<li><a href="#">wrapping text</a></li>
<li><a href="#">styled form</a></li>
<li><a href="#">active focus</a></li>
<li><a href="#">shadow boxing</a></li>
<li><a href=".#">image map</a></li>
<li><a href="#">fun backgrounds</a></li>
<li><a href="#">fade scrolling</a></li>
<li><a href="#">em sized images</a></li>
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<ul>
<li><a href="#" title="a coded list of spies">spies menu</a></li>
<li><a href="#" title="a horizontal vertical menu">vertical menu</a></li>
<li><a href="#" title="an enlarging unordered list">enlarging list</a></li>
<li><a href="#" title="an unordered list with link images">link images</a></li>
<li><a href="#" title="non-rectangular links">non-rectangular</a></li>
<li><a href="#" title="jigsaw links">jigsaw links</a></li>
<li><a href="#" title="circular links">circular links</a></li>
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<li><a href="../layouts/bodyfix.html" title="Cross browser fixed layout">Fixed 1</a></li>
<li><a href="../layouts/body2.html" title="Cross browser fixed layout">Fixed 2</a></li>
<li><a href="../layouts/body4.html" title="Cross browser fixed layout">Fixed 3</a></li>
<li><a href="../layouts/body5.html" title="Cross browser fixed layout">Fixed 4</a></li>
<li><a href="../layouts/minimum.html" title="A simple minimum width layout">minimum width</a></li>
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<li><a class="hide" href="../boxes/index.html">BOXES</a>
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<a href="../boxes/index.html">BOXES
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<ul>
<li><a href="spies.html" title="a coded list of spies">spies menu</a></li>
<li><a href="vertical.html" title="a horizontal vertical menu">vertical menu</a></li>
<li><a href="expand.html" title="an enlarging unordered list">enlarging list</a></li>
<li><a href="enlarge.html" title="an unordered list with link images">link images</a></li>
<li><a href="cross.html" title="non-rectangular links">non-rectangular</a></li>
<li><a href="jigsaw.html" title="jigsaw links">jigsaw links</a></li>
<li><a href="circles.html" title="circular links">circular links</a></li>
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<ul>
<li><a href="../mozilla/dropdown.html" title="A drop down menu">drop down menu</a></li>
<li><a href="../mozilla/cascade.html" title="A cascading menu">cascading menu</a></li>
<li><a href="../mozilla/content.html" title="Using content:">content:</a></li>
<li><a href="../mozilla/moxbox.html" title=":hover applied to a div">mozzie box</a></li>
<li><a href="../mozilla/rainbow.html" title="I can build a rainbow">rainbow box</a></li>
<li><a href="../mozilla/snooker.html" title="Snooker cue">snooker cue</a></li>
<li><a href="../mozilla/target.html" title="Target Practise">target practise</a></li>
<li><a href="../mozilla/splittext.html" title="Two tone headings">two tone headings</a></li>
<li><a href="../mozilla/shadow_text.html" title="Shadow text">shadow text</a></li>
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<li><a href="../ie/exampleone.html" title="Example one">example one</a></li>
<li><a href="../ie/weft.html" title="Weft fonts">weft fonts</a></li>
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<li><a href="../opacity/colours.html" title="colour wheel">opaque colours</a></li>
<li><a href="../opacity/picturemenu.html" title="a menu using opacity">opaque menu</a></li>
<li><a href="../opacity/png.html" title="partial opacity">partial opacity</a></li>
<li><a href="../opacity/png2.html" title="partial opacity II">partial opacity II</a></li>
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<!-- clear the floats if required -->
<div class="clear"></div>
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</body>
</html>
运行一下试试！不知道是不是你要的效果~
简单的话，可以这么做，用JSfunction opencat(cat){
if(document.getElementById(cat).style.display=="none"){
document.getElementById(cat).style.display=""
}
else {
document.getElementById(cat).style.display="none"
}
}
然后在要收缩菜单的按钮或链接上这么做 比如超连接
<a id="menu1" href="#" style="display:block" onclick="opencat('list1')">
下面紧跟着的是展开后的目录内容，可以是Table，也可以是DIV
<table id="list1">
<tr><td>111111</td></tr>
<tr><td>222222</td></tr>
<tr><td>33333</td></tr>
<tr><td>4444444</td></tr>
<tr><td>5555555</td></tr>
</table>
