<script language="VBScript" >
Function bytes2BSTR(vIn)
Dim strReturn,i,ThisCharCode,innerCode,Hight8,Low8,NextCharCode
strReturn = ""

For i = 1 To LenB(vIn)
 ThisCharCode = AscB(MidB(vIn,i,1))
 If ThisCharCode < &H80 Then
  strReturn = strReturn & Chr(ThisCharCode)
 Else
  NextCharCode = AscB(MidB(vIn,i+1,1))
  strReturn = strReturn & Chr(CLng(ThisCharCode) * &H100 + CInt(NextCharCode))
  i = i + 1
 End If
Next
bytes2BSTR = strReturn
End Function
</script>

<script language="JavaScript">
function getXML(URL) {
var xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
xmlhttp.Open("GET",URL, false);
try {
xmlhttp.Send();
var result = xmlhttp.status;
}
catch(e) {
return(false);
}
if(result==200) {
return(bytes2BSTR(xmlhttp.responseBody));
}
var xmlhttp = null;
}
function update()
{
 try
 {
  document.body.innerHTML = getXML(''countdata.asp''+''?para=''+Math.random()); //将这儿改成你的网页就行了

 }
 catch(e)
 {
  }
}
setInterval("update()",20000); //定时刷新
</script>