用js控制div的显示位置

在编程时,我把div放到了form后面。可是运行显示时得显示在form之前,请高手帮忙!
源码:
//form 用这个div来布局
<form name="jlxForm1" >
<div style="width:100%;">
</div>
</form>

//下面是要显示的div,怎么把这个div显示在form的前面啊????
<div id="dhtmlgoodies_slidedown_selfDefined">
<div id="dhtmlgoodies_contentBox_selfDefined">
<div id="dhtmlgoodies_content_selfDefined">
..........................................内容.......................
</div>
</div>
</div>

代码如下:

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>div隐藏与显示</title>
<style type=text/css>
#menus {
       background-color: #c4cff0;      
      }
</style>
<script   language=javascript>
function Layer_HideOrShow(cur_div)
{ var current=document.getElementById(cur_div);
   if(current.style.visibility=="hidden")
     {
       current.style.visibility ="visible";
     }
   else
    {
      current.style.visibility ="hidden";
    }
}
</script>
</head>
<body>
<p> </p>
<table border="0" width="153" cellpadding="0" style="border-collapse: collapse" id="table1" height="101">
<tr>
   <td>
   <a href="#" onclick="Layer_HideOrShow('menus');"><img border="0" src="http://www.shuifutour.com/images/456.gif" width="153" height="25"></a></td>
</tr>
<tr>
   <td>
   <div id="menus">
    <table border="0" width="100%" cellpadding="0" style="border-collapse: collapse" height="150" id="table2">
     <tr>
      <td> </td>
     </tr>
    </table>
   </div></td>
</tr>
</table>
</body>
</html>
====================
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script language="JavaScript" type="text/JavaScript">
<!--
function toggle(targetid){
     if (document.getElementById){
         target=document.getElementById(targetid);
             if (target.style.display=="block"){
                 target.style.display="none";
             } else {
                 target.style.display="block";
             }
     }
}
-->
</script>
<style type="text/css">
<!--
#div1{
background-color:#000000;
height:400px;
width:400px;
display:none;
}
-->
</style>
</head>

<body>厅孝帆
<input type="button" id="butn" value="显示/隐藏" onclick="toggle('div1')" />
<center>
<div id="div1"></div></center>
居中的DIV
</body>
</html>
=======================
3.javascript 控制扮雹 html元素 显示/隐藏

1。编写js函数

<script type="text/javascript">

   function display(id){

       var traget=document.getElementById(id);
        if(traget.style.display=="none"){
            慎敬    traget.style.display="";
        }else{
                traget.style.display="none";
      }
   }
</script>

2. 要显示/隐藏的html元素加上 id 属性

<table>

    <tr id="menu" >   

       <td>控制这个tr的显示/隐藏</td>

   </tr>

</table>

3,添加按钮,链接等触发 js 函数

<input type="button" onclick="display('menu')"   value="显示/隐藏"/>

<a href="#"   onclick="display('menu')"   >显示/隐藏</a>

javascript显示隐藏层<div id="" style="display:none;">广告</div>
<input type="botton" onclick="函数">

<script language=javascript>
function 函数{
if(thisdiv.style.display=='none'){ 
thisdiv.style.display=""
}
else
thisdiv.style.display="none"
}

</script给div 取个ID=“AA”thisdiv=AA

javascript隐藏/显示表单对象
javascript隐藏/显示表单对象 
[SCRIPT language=JavaScript]
function expandIt(el) {
     whichEl =document.getElementById(el)
     if (whichEl.style.display ==   'none') {
      whichEl.style.display   = '';
     }
     else {
      whichEl.style.display   = 'none';
     }
     }
  
[/SCRIPT]

el是对象的id,不管是tr或者table等等先设置一下id,然后进行调用。

例:

[a onclick="expandIt('ttchild'); return false" href="#" ]try it[/a]

[tr id="ttchild"][td width="18"]Example[/td][/tr]

使用时把[]变成<>

javascript控制页面控件隐藏显示的两种方法

javascript控制页面控件隐藏显示的两种方法,方法的不同之处在于控件隐藏后是否还在页面上占位
方法一:
document.all["PanelSMS"].style.visibility="hidden"; 
document.all["PanelSMS"].style.visibility="visible";
方法二:
document.all["PanelSMS"].style.display="none"; 
document.all["PanelSMS"].style.display="inline";

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>
<script>
function init(){
document.body.insertBefore(document.getElementById("dhtmlgoodies_slidedown_selfDefined"),document.body.childNodes[0]);
}
</script>
<body onload="init();">
//form 用这个div来布局
<form name="jlxForm1" >
<input type="text" name="t" />
<div style="width:100%;">
</div>
</form>键乎

/橘猛/下面是要显示的div,怎么把这个div显示在form的前面啊????
<div id="dhtmlgoodies_slidedown_selfDefined">圆亮桥
<div id="dhtmlgoodies_contentBox_selfDefined">
<div id="dhtmlgoodies_content_selfDefined">
..........................................内容.......................
</div>
</div>
</div>
</body>
</html>
<div id="dhtmlgoodies_slidedown_selfDefined">
<div id="dhtmlgoodies_contentBox_selfDefined">
<div id="dhtmlgoodies_content_selfDefined">
..........................................内容.......................
</div>
<脊橡/div>
</div>
<!--//form 用这个div来布局-->
<form name="jlxForm1" >
<div style="width:100%;">
<樱脊旁野坦/div>
</form>