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javascript弹出一个层并增加一个覆盖层

2008-10-10 00:00 323 查看

<!--内容层--> 
<div id="ShopConfirmLayer" style="position:absolute;top:300px;left:100px;z-index:900;border:1px red solid;width:500px;display:none;"> 
<input name="button1" value="关闭" type="button" onclick="CloseShopConfirm()"/> 
</div> 
<!--覆盖层--> 
<div id="webBgLayer" style="position:absolute;top:0px;left:0px;z-index:899;background-color:#ccc;height:100%;width:100%;display:none;-moz-opacity:0.5;filter:alpha(opacity=50);"></div> 
<script type="text/javascript"> 
function ShopConfirm(str){ 
var ShopConfirmLayer=document.getElementById("ShopConfirmLayer"); 
var webBgLayer=document.getElementById("webBgLayer"); 
ShopConfirmLayer.innerHTML=str; 
ShopConfirmLayer.style.display=""; 
ShopConfirmLayer.style.left=parseInt((document.documentElement.scrollWidth-ShopConfirmLayer.offsetWidth)/2)+document.documentElement.scrollLeft+"px"; 
ShopConfirmLayer.style.top=Math.abs(parseInt((document.documentElement.clientHeight-ShopConfirmLayer.offsetHeight)/2))+document.documentElement.scrollTop+"px"; 
webBgLayer.style.display=""; 
webBgLayer.style.height=document.documentElement.scrollHeight+"px"; 
} 
function CloseShopConfirm(){ 
var ShopConfirmLayer=document.getElementById("ShopConfirmLayer"); 
var webBgLayer=document.getElementById("webBgLayer"); 
ShopConfirmLayer.style.display="none"; 
webBgLayer.style.display="none"; 
} 
</script>

注意上面的代码头部DTD应该是这样：

<!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">

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function ShopConfirm(str){
var ShopConfirmLayer=document.getElementById("ShopConfirmLayer");
var webBgLayer=document.getElementById("webBgLayer");
// ShopConfirmLayer.innerHTML=str;
ShopConfirmLayer.style.display="";
ShopConfirmLayer.style.left=parseInt((document.documentElement.scrollWidth-ShopConfirmLayer.offsetWidth)/2)+document.documentElement.scrollLeft+"px";
ShopConfirmLayer.style.top=Math.abs(parseInt((document.documentElement.clientHeight-ShopConfirmLayer.offsetHeight)/2))+document.documentElement.scrollTop+"px";
webBgLayer.style.display="";
webBgLayer.style.height=document.documentElement.scrollHeight+"px";
}
function CloseShopConfirm(){
var ShopConfirmLayer=document.getElementById("ShopConfirmLayer");
var webBgLayer=document.getElementById("webBgLayer");
ShopConfirmLayer.style.display="none";
webBgLayer.style.display="none";
}

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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