大家快来看看，这个怎么实现

这个代码 你直接修改 里面的代码就可以了(或者在弹出的层里面放一个 iframe 载个页面都可以的哈)<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>提示信息框</title>
<style type="text/css">
a{ color:#000; font-size:12px;text-decoration:none}
a:hover{ color:#900; text-decoration:underline}
body{background:;filter:progid:DXImageTransform.Microsoft.Gradient(gradientType=0,startColorStr=#ffffff,endColorStr=#003366); overflow:hidden}
#massage_box{ position:absolute; left:expression((body.clientWidth-350)/2); top:expression((body.clientHeight-200)/2); width:350px; height:200px;filter:dropshadow(color=#666666,offx=3,offy=3,positive=2); z-index:2; visibility:hidden}
#mask{ position:absolute; top:0; left:0; width:expression(body.scrollWidth); height:expression(body.scrollHeight); background:#666; filter:ALPHA(opacity=60); z-index:1; visibility:hidden}
.massage{border:#036 solid; border-width:1 1 3 1; width:95%; height:95%; background:#fff; color:#036; font-size:12px; line-height:150%}
.header{background:#036; height:10%; font-family:Verdana, Arial, Helvetica, sans-serif; font-size:12px; padding:3 5 0 5; color:#fff}
</style>
<!--实现层移动-->
<script language="javascript">
var Obj=''
document.onmouseup=MUp
document.onmousemove=MMovefunction MDown(Object){
Obj=Object.id
document.all(Obj).setCapture()
pX=event.x-document.all(Obj).style.pixelLeft;
pY=event.y-document.all(Obj).style.pixelTop;
}function MMove(){
if(Obj!=''){
  document.all(Obj).style.left=event.x-pX;
  document.all(Obj).style.top=event.y-pY;
  }
}function MUp(){
if(Obj!=''){
  document.all(Obj).releaseCapture();
  Obj='';
  }
}
</script>
</head><body>
<div id="massage_box"><div class="massage">
<div class="header" onmousedown=MDown(massage_box)><div style="display:inline; width:150px; position:absolute">本站提示信息</div>
<span onClick="massage_box.style.visibility='hidden'; mask.style.visibility='hidden'" style="float:right; display:inline; cursor:hand">×</span></div>
<ul style="margin-right:25"><li>你的要放的代码 
</li><input type="text" /><br /><input type="button" value="这是按扭" />
<li></li><li></li></ul></div></div>
<div id="mask"></div>
<span onClick="mask.style.visibility='visible';massage_box.style.visibility='visible'" style="cursor:hand"><a href="#">显示提示信息</a></span>
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>bottom here
</body>
</html>