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js弹出窗口之弹出层的小例子

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[html]
复制代码 代码如下:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd"> 
<HTML xmlns="http://www.w3.org/1999/xhtml"> 
<HEAD> 
<TITLE>弹出窗口</TITLE> 
<META http-equiv=Content-Type content="text/html; charset=utf-8"> 
<style> 
#popupcontent{  
  position: absolute; 
  visibility: hidden;    
  overflow: hidden;    
  border:1px solid #CCC;    
  background-color:#F9F9F9;    
  border:1px solid #333;    
  padding:5px;} 
</style> 
<script> 
var baseText = null;  
function showPopup(w,h){    
    var popUp = document.getElementById("popupcontent");    
    popUp.style.top = "200px";    
    popUp.style.left = "200px";    
    popUp.style.width = w + "px";    
    popUp.style.height = h + "px";     
    if (baseText == null) baseText = popUp.innerHTML;   
    popUp.innerHTML = baseText + "<div id=\"statusbar\"><input type=\"button\" value=\"Close window\" onClick=\"hidePopup();\"></div>";    
    var sbar = document.getElementById("statusbar");    
    sbar.style.marginTop = (parseInt(h)-60) + "px";   
    popUp.style.visibility = "visible"; 

function hidePopup(){    
    var popUp = document.getElementById("popupcontent");    
    popUp.style.visibility = "hidden"; 

</script> 
<META content="MSHTML 6.00.2900.2838" name=GENERATOR></HEAD> 
<BODY> 
<div id="popupcontent">content</div> 

 
<p><a href="#" onClick="showPopup(300,200);" >onclick</a></p> 
</BODY> 
</HTML> 

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