代码简介：
JavaScript防FLASH效果的下拉菜单导航，单击文本链接，在下方出现相应的导航内容，很不错的。
代码内容：
<html>
<head>
<title>JavaScript防FLASH效果的下拉菜单导航代码_网页代码站(www.webdm.cn)</title>
<style>
<!--
#iewrap{
position:relative;
height:30px
}
#iewrap2{
position:absolute
}
#dropmenu03{
filter:revealTrans(Duration=1.5,Transition=12)
visibility:hide
}
-->
</style>
</head>
<body>
<ilayer id="dropmenu01" height=35px>
<layer id="dropmenu02" visibility=show>
<span id="iewrap">
<span id="iewrap2" onClick="dropit2();event.cancelBubble=true;return false">
<font face="宋体"><a href="#">点这里看本站栏目</a></font>
</span>
</span>
</layer>
</ilayer>
<SCRIPT language=javascript><!--
var enableeffect=true
//将如下数组修改成你自己的。
var selection=new Array()
selection[0]='<font face="宋体"><a href="/">网页代码站</a></font><br>'
selection[1]='<font face="宋体"><a href="/">CSS代码</a></font><br>'
selection[2]='<font face="宋体"><a href="/">JS</a></font><br>'
selection[3]='<font face="宋体"><a href="/">Flash</a></font><br>'
selection[4]='<font face="宋体"><a href="/">Asp</a></font><br>'
selection[5]='<font face="宋体"><a href="/">Aspnet</a></font><br>'
selection[6]='<font face="宋体"><a href="/">php</a></font><br>'
selection[7]='<font face="宋体"><a href="/">jsp</a></font>'
if (document.layers)
document.dropmenu01.document.dropmenu02.visibility='show'
function dropit2(){
if (document.all){
dropmenu03.style.left=document.body.scrollLeft+event.clientX-event.offsetX
dropmenu03.style.top=document.body.scrollTop+event.clientY-event.offsetY+18
if (dropmenu03.style.visibility=="hidden"){
if (enableeffect)
dropmenu03.filters.revealTrans.apply()
dropmenu03.style.visibility="visible"
if (enableeffect)
dropmenu03.filters.revealTrans.play()
}
else{
hidemenu()
}
}
}
function dropit(e){
if (document.dropmenu03.visibility=="hide")
document.dropmenu03.visibility="show"
else
document.dropmenu03.visibility="hide"
document.dropmenu03.left=e.pageX-e.layerX
document.dropmenu03.top=e.pageY-e.layerY+19
return false
}
function hidemenu(){
if (enableeffect)
dropmenu03.filters.revealTrans.stop()
dropmenu03.style.visibility="hidden"
}
function hidemenu2(){
document.dropmenu03.visibility="hide"
}
if (document.layers){
document.dropmenu01.document.dropmenu02.captureEvents(Event.CLICK)
document.dropmenu01.document.dropmenu02.onclick=dropit
}
else if (document.all)
document.body.onclick=hidemenu
//-->
</SCRIPT>
<!-- 你可以改变菜单出现的绝对位置和外观风格-->
<div id="dropmenu03" style="position:absolute;left:10;top:0;layer-background-color:seashell;background-color:seashell;100;visibility:hidden;border:1px solid black;padding:0px">
<script language="JavaScript1.2">
if (document.all)
dropmenu03.style.padding='6px'
for (i=0;i<selection.length;i++)
document.write(selection[i])
</script>
</div>
<script language="JavaScript1.2">
if (document.layers){
document.dropmenu03.captureEvents(Event.CLICK)
document.dropmenu03.onclick=hidemenu2
}
</script>
</body>
</html>
<br>
<p><a href="http://www.webdm.cn">网页代码站</a> - 最专业的代码下载网站 - 致力为中国站长提供有质量的代码！</p>
代码来自：http://www.webdm.cn/webcode/b633b6a9-a543-4101-8911-bf4b3a7e6c86.html