功能非常全面的日期处理函数

<script language=javascript>
function fnSubmit(strPage)
{
  document.forms[0].action= strPage
  document.forms[0].submit()    
}

</script>
<%

call writedropdowns

Sub writeDropDowns()
  Dim strSelfLink
  strSelfLink = request.servervariables("SCRIPT_NAME")
  response.Write "<form name=dates method=post>" & vbcrlf
  response.Write MonthDropDown("month1",False,request("month1"),strSelfLink) & " " & DayDropDown("day1", "",getDaysInMonth(request("month1"),request("year1")),request("day1")) & " " & YearDropDown("year1","","", request("year1"),strSelfLink) & vbcrlf
  response.Write "</form>"    & vbcrlf
End Sub
        

Function MonthDropDown(strName, blnNum, strSelected, strSelfLink)
  Dim strTemp, i, strSelectedString            
  strTemp = "<select name=" & strName& " onchange=javascript: fnSubmit(" & chr(34) & strSelfLink & chr(34) & ")>" & vbcrlf
  strTemp = strTemp & "<option value=" & 0 & ">" & "Month" & "</option>" & vbcrlf            
  For i = 1 To 12
    If strSelected = CStr(i) Then
    strSelectedString = "Selected"
    Else
    strSelectedString = ""
    End If
            
    If blnNum Then
      strTemp = strTemp & "<option value=" & i & " " & strSelectedString & " >" & i & "</option>" & vbcrlf            
    Else
    strTemp = strTemp & "<option value=" & i & " " & strSelectedString & " >" & MonthName(i) & "</option>" & vbcrlf            
    End If
  Next                    
  strTemp = strTemp & "</select>" & vbcrlf    
  MonthDropDown = strTemp
End Function


Function YearDropDown(strName, intStartYear, intEndYear, strSelected, strSelfLink)
  
  Dim strTemp, i, strSelectedString    
  
  If intStartYear = "" Then
    intStartYear = Year(now())
  End If    
    
  If intEndYear = "" Then
    intEndYear = Year(now()) + 9
  End If