模仿新浪邮箱的alert渐变的提示框[网页特效代码]

来源：互联网发布：物美价廉淘宝男装店编辑：程序博客网时间：2024/05/22 05:59

<!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" xml:lang="zh-CN" lang="zh-CN">
<head>
 <meta name="verify-v1" content="P4T6fFCiPVxqMWZ2eztyXVzMHlnwD0wLQOq6LBHN5Y8=" />
 <title>网页教学网Webjx.Com 提供最新最快的网页技术</title>
 <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
 <meta http-equiv="Content-Language" content="gb2312" />
 <style type="text/css">
 *{
 margin:0;padding:0;
 }
 </style>
</head>
<body>

<div class="cecmbody" id="cecmpolicy">
 <div class="leftClass">

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 <input type="button" value="点击这里" onclick="sAlert('我是一个渐变的sAlert',this);" />
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</div>
 <div class="rightClass">
 </div>
</div>
 <script type="text/javascript" language="javascript">

 function sAlert(txt){
var eSrc=(document.all)?window.event.srcElement:arguments[1];
var shield = document.createElement("DIV");
shield.id = "shield";
shield.style.position = "absolute";
shield.style.left = "0px";
shield.style.top = "0px";
shield.style.width = "100%";
shield.style.height = document.body.scrollHeight+"px";
shield.style.background = "#333";
shield.style.textAlign = "center";
shield.style.zIndex = "10000";
shield.style.filter = "alpha(opacity=0)";
shield.style.opacity = 0;
var alertFram = document.createElement("DIV");
alertFram.id="alertFram";
alertFram.style.position = "absolute";
alertFram.style.left = "50%";
alertFram.style.top = "50%";
alertFram.style.marginLeft = "-225px" ;
alertFram.style.marginTop = -75+document.documentElement.scrollTop+"px";
alertFram.style.width = "450px";
alertFram.style.height = "150px";
alertFram.style.background = "#ccc";
alertFram.style.textAlign = "center";
alertFram.style.lineHeight = "150px";
alertFram.style.zIndex = "10001";

strHtml = "<ul style=/"list-style:none;margin:0px;padding:0px;width:100%/">/n";
strHtml += " <li style=/"background:#DD828D;text-align:left;padding-left:20px;font-size:14px;font-weight:bold;height:25px;line-height:25px;border:1px solid #F9CADE;/">[系统提示]</li>/n";
strHtml += " <li style=/"background:#fff;text-align:center;font-size:12px;height:120px;line-height:120px;border-left:1px solid #F9CADE;border-right:1px solid #F9CADE;/">"+txt+"</li>/n";
strHtml += " <li style=/"background:#FDEEF4;text-align:center;font-weight:bold;height:25px;line-height:25px; border:1px solid #F9CADE;/"><input type=/"button/" value=/"确定/" id=/"do_OK/" onclick=/"doOk()/" /></li>/n";
strHtml += "</ul>/n";
alertFram.innerHTML = strHtml;
document.body.appendChild(alertFram);
document.body.appendChild(shield);
this.setOpacity = function(obj,opacity){
 if(opacity>=1)opacity=opacity/100;
 try{ obj.style.opacity=opacity; }catch(e){}
 try{
 if(obj.filters.length>0&&obj.filters("alpha")){
 obj.filters("alpha").opacity=opacity*100;
 }else{
 obj.style.filter="alpha(opacity=/""+(opacity*100)+"/")";
 }
 }catch(e){}
}
var c = 0;
this.doAlpha = function(){
 if (++c > 20){clearInterval(ad);return 0;}
 setOpacity(shield,c);
}
var ad = setInterval("doAlpha()",1);
this.doOk = function(){
 //alertFram.style.display = "none";
 //shield.style.display = "none";
 document.body.removeChild(alertFram);
 document.body.removeChild(shield);
 eSrc.focus();
 document.body.onselectstart = function(){return true;}
 document.body.oncontextmenu = function(){return true;}
}
document.getElementById("do_OK").focus();
eSrc.blur();
document.body.onselectstart = function(){return false;}
document.body.oncontextmenu = function(){return false;}
}
 </script>
</body>
</html>