vbs版的urldecode

Public Function URLEncode(strURL)
Dim I
Dim tempStr
For I = 1 To Len(strURL)
    If Asc(Mid(strURL, I, 1)) < 0 Then
       tempStr = "%" & Right(CStr(Hex(Asc(Mid(strURL, I, 1)))), 2)
       tempStr = "%" & Left(CStr(Hex(Asc(Mid(strURL, I, 1)))), Len(CStr(Hex(Asc(Mid(strURL, I, 1))))) - 2) & tempStr
       URLEncode = URLEncode & tempStr
    ElseIf (Asc(Mid(strURL, I, 1)) >= 65 And Asc(Mid(strURL, I, 1)) <= 90) Or (Asc(Mid(strURL, I, 1)) >= 97 And Asc(Mid(strURL, I, 1)) <= 122) Then
       URLEncode = URLEncode & Mid(strURL, I, 1)
    Else
       URLEncode = URLEncode & "%" & Hex(Asc(Mid(strURL, I, 1)))
    End If
Next
End Function

Public Function URLDecode(strURL)
Dim I

If InStr(strURL, "%") = 0 Then URLDecode = strURL: Exit Function

For I = 1 To Len(strURL)
    If Mid(strURL, I, 1) = "%" Then
       If eval("&H" & Mid(strURL, I + 1, 2)) > 127 Then
          URLDecode = URLDecode & Chr(eval("&H" & Mid(strURL, I + 1, 2) & Mid(strURL, I + 4, 2)))
          I = I + 5
       Else
          URLDecode = URLDecode & Chr(eval("&H" & Mid(strURL, I + 1, 2)))
          I = I + 2
       End If
    Else
       URLDecode = URLDecode & Mid(strURL, I, 1)
    End If
Next
End Function