类似于新浪邮箱的提示效果

<! 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 > 类似于新浪邮箱的提示效果 </ title >
     < style type = " text/css " >
       * ... {
          margin:0;padding:0;
      }
   </ style >
  </ head >
  < body >
 

  < div class = " cecmbody "  id = " cecmpolicy " >
   < div class = " leftClass " >
            
< p > 测试 </ p >< p > 测试 </ p >
    < p > 测试 </ p >< p > 测试 </ p >< p > 测试 </ p >< p > 测试 </ p >< p > 测试 </ p >
    < p > 测试 </ p >< p > 测试 </ p >< p > 测试 </ p >< p > 测试 </ p >< p > 测试 </ p >< p > 测试 </ p >< p > 测试 </ p >< p > 测试 </ p >

    < input type = " button "  value = " 点击这里 "  onclick = " sAlert('测试效果'); "   />
  

   </ 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 >