乌达奇内天气:ASP中为什么不执行msg="上传文件成功！"这一句呀

下面的过程文件上传成功后不提示呢，<%
sub upload_0()
set upload=new upload_file
for each formName in upload.file
set file=upload.file(formName)
if file.filesize<100 then
msg="请先选择你要上传的文件！"
founderr=true
end if
if file.filesize>(MaxFileSize*1024) then
msg="文件大小超过了限制，最大只能上传" & CStr(MaxFileSize) & "K的文件！"
founderr=true
end if

fileExt=lcase(file.FileExt)
Forumupload=split(UpFileType,"|")
for i=0 to ubound(Forumupload)
if fileEXT=trim(Forumupload(i)) then
EnableUpload=true
exit for
end if
next
if fileEXT="asp" or fileEXT="asa" or fileEXT="aspx" then
EnableUpload=false
end if
if EnableUpload=false then
msg="这种文件类型不允许上传！\n\n只允许上传这几种文件类型：" & UpFileType
founderr=true
end if

strJS="<SCRIPT language=javascript>" & vbcrlf
if founderr<>true then
randomize
ranNum=int(900*rnd)+100
filename=SavePath&year(now)&month(now)&day(now)&hour(now)&minute(now)&second(now)&ranNum&"."&fileExt

file.SaveToFile Server.mappath(FileName) '保存文件

msg="上传文件成功！"

strJS=strJS & "parent.HtmlEdit.focus();" & vbcrlf
strJS=strJS & "var range = parent.HtmlEdit.document.selection.createRange();" & vbcrlf
FileType=right(fileExt,3)
select case FileType
case "jpg","gif","png","bmp"
strJS=strJS & "range.pasteHTML('<img src=" & filename & ">');" & vbcrlf
case "swf"
strJS=strJS & "range.pasteHTML('<object classid=clsid:D27CDB6E-AE6D-11cf-96B8-444553540000 codebase=http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0>"
strJS=strJS & "<param name=movie value=" & FileName & ">"
strJS=strJS & "<param name=quality value=high>"
strJS=strJS & "<embed src=" & FileName & " quality=high pluginspage=http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash type=application/x-shockwave-flash>"
strJS=strJS & "</embed></object>');" & vbcrlf
case else
strJS=strJS & "range.text='[upload=" & FileType & "]" & FileName & "[/upload]';" & vbcrlf
end select
strJS=strJS & "parent.parent.myform.IncludePic.checked=true;" & vbcrlf
strJS=strJS & "parent.parent.myform.DefaultPicUrl.value='" & FileName & "';" & vbcrlf
strJS=strJS & "parent.parent.myform.DefaultPicList.options[parent.parent.myform.DefaultPicList.length] = new Option('" & filename & "','" & filename & "');" & vbcrlf
strJS=strJS & "parent.parent.myform.DefaultPicList.selectedIndex+=1;" & vbcrlf
strJS=strJS & "if(parent.parent.myform.UploadFiles.value==''){" & vbcrlf
strJS=strJS & "parent.parent.myform.UploadFiles.value+='" & filename & "';}" & vbcrlf
strJS=strJS & "else{" & vbcrlf & "parent.parent.myform.UploadFiles.value+='|'+'" & filename & "';}" & vbcrlf
end if
strJS=strJS & "alert('" & msg & "');" & vbcrlf
strJS=strJS & "history.go(-1);" & vbcrlf
strJS=strJS & "parent.HtmlEdit.focus();" & vbcrlf
strJS=strJS & "</script>"
response.write strJS
set file=nothing
next
set upload=nothing
end sub
%>