javascript实现仿新浪信息提示效果


以下是引用片段:

<!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>政策文件_中国电力工程造价信息网</title>
 <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
 <meta http-equiv="Content-Language" content="gb2312" />
 <meta name="KeyWords" content="电力工程造价,价格信息,装材,设备,电力工程" />
 <meta name="description" content="电力工程造价信息" />
 <style type="text/css">
   *{
     margin:0;padding:0;
   }
 </style>
</head>
<body>
 
<div class="cecmbody" id="cecmpolicy">
 <div class="leftClass">
 <a href=http://homepage.yesky.com>网页陶吧</a>
 <input type="button" value="点击这里" onclick="sAlert('hello');" />
 </div>
 <div class="rightClass">
 </div> 
</div>
  <script type="text/javascript" language="javascript">
//Author:Daviv
//Blog:http://blog.163.com/jxdawei
//Date:2006-10-27
//Email:jxdawei@gmail.com
  function sAlert(str){
  var msgw,msgh,bordercolor;
  msgw=400;//提示窗口的宽度
  msgh=100;//提示窗口的高度
  titleheight=25 //提示窗口标题高度
  bordercolor="#336699";//提示窗口的边框颜色
  titlecolor="#99CCFF";//提示窗口的标题颜色
  
  var sWidth,sHeight;
  sWidth=document.body.offsetWidth;
  sHeight=screen.height;
  var bgObj=document.createElement("div");
  bgObj.setAttribute('id','bgDiv');
  bgObj.style.position="absolute";
  bgObj.style.top="0";
  bgObj.style.background="#777";
  bgObj.style.filter="progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75";
  bgObj.style.opacity="0.6";
  bgObj.style.left="0";
  bgObj.style.width=sWidth + "px";
  bgObj.style.height=sHeight + "px";
  bgObj.style.zIndex = "10000";
  document.body.appendChild(bgObj);
  
  var msgObj=document.createElement("div")
  msgObj.setAttribute("id","msgDiv");
  msgObj.setAttribute("align","center");
  msgObj.style.background="white";
  msgObj.style.border="1px solid " + bordercolor;
   msgObj.style.position = "absolute";
      msgObj.style.left = "50%";
      msgObj.style.top = "50%";
      msgObj.style.font="12px/1.6em Verdana, Geneva, Arial, Helvetica, sans-serif";
      msgObj.style.marginLeft = "-225px" ;
      msgObj.style.marginTop = -75+document.documentElement.scrollTop+"px";
      msgObj.style.width = msgw + "px";
      msgObj.style.height =msgh + "px";
      msgObj.style.textAlign = "center";
      msgObj.style.lineHeight ="25px";
      msgObj.style.zIndex = "10001";
  
   var title=document.createElement("h4");
   title.setAttribute("id","msgTitle");
   title.setAttribute("align","right");
   title.style.margin="0";
   title.style.padding="3px";
   title.style.background=bordercolor;
   title.style.filter="progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);";
   title.style.opacity="0.75";
   title.style.border="1px solid " + bordercolor;
   title.style.height="18px";
   title.style.font="12px Verdana, Geneva, Arial, Helvetica, sans-serif";
   title.style.color="white";
   title.style.cursor="pointer";
   title.innerHTML="关闭";
   title.onclick=function(){
     document.body.removeChild(bgObj);
        document.getElementById("msgDiv").removeChild(title);
        document.body.removeChild(msgObj);
        }
   document.body.appendChild(msgObj);
   document.getElementById("msgDiv").appendChild(title);
   var txt=document.createElement("p");
   txt.style.margin="1em 0"
   txt.setAttribute("id","msgTxt");
   txt.innerHTML=str;
      document.getElementById("msgDiv").appendChild(txt);
      }
 </script>
</body>
</html>

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