css实现下拉菜单 && php获取select下拉列表框的值
做个笔记哈：用css时下自动下拉菜单，此生和前端无缘，还是css友好些，看见js就心烦：
<style>
#sddm
{ margin: 0 auto;
padding: 0;
z-index: 30;
background-color:#F4F4F4;
}
#sddm li
{ margin: 0;
padding: 0;
list-style: none;
float: left;
font: bold 12px arial}
#sddm li a
{ display: block;
margin: 0 1px 0 0;
padding: 4px 10px;
width: 60px;
background: #5970B2;
color: #FFF;
text-align: center;
text-decoration: none}
#sddm li a:hover
{ background: #49A3FF}
#sddm div
{ position: absolute;
visibility: hidden;
margin: 0;
padding: 0;
background: #EAEBD8;
border: 1px solid #5970B2}
#sddm div a
{ position: relative;
display: block;
margin: 0;
padding: 5px 10px;
width: auto;
white-space: nowrap;
text-align: left;
text-decoration: none;
background: #EAEBD8;
color: #2875DE;
font: 12px arial}
#sddm div a:hover
{ background: #49A3FF;
color: #FFF}
</style>
<!-- dd menu -->
<script type="text/javascript">
<!--
var timeout = 1;
var closetimer = 0;
var ddmenuitem = 0;
// open hidden layer
function mopen(id)
{
// cancel close timer
mcancelclosetime();
// close old layer
if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
// get new layer and show it
ddmenuitem = document.getElementById(id);
ddmenuitem.style.visibility = 'visible';
}
// close showed layer
function mclose()
{
if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
}
// go close timer
function mclosetime()
{
closetimer = window.setTimeout(mclose, timeout);
}
// cancel close timer
function mcancelclosetime()
{
if(closetimer)
{
window.clearTimeout(closetimer);
closetimer = null;
}
}
// close layer when click-out
document.onclick = mclose;
</script>
</head>
<body>
<li><a href="home" onmouseover="mopen('m1')" onmouseout="mclosetime()">我的空间</a>
<ul id="sddm" >
<div id="m1" onmouseover="mcancelclosetime()" onmouseout="mclosetime()">
<a href="1">1DSFG</a>
<a href="2">2DFGDFSG</a>
<a href="3">3DFGDSFG</a>
</div>
</ul>
</li>
</ul>
</body> php获取select下拉列表框的值：
<!DOCTYPE> <html> <head><title></title></head> <body> <form name="form1" enctype="multipart/form-data" method="post" action="select.php"> <label> <select name="select"> <option value="1">select下拉列表框的值</option> <option value="2">1</option> <option value="3">2</option> </select> </label> <label> <input type="submit" name="Submit" value="提交"> </label> </form> </body> </html>$_POST["select"];就可以了！