function UTF2GB(UTFStr) for Dig=1 to len(UTFStr)
'如果UTF8编码文字以%开头则进行转换
if mid(UTFStr,Dig,1)="%" then
 'UTF8编码文字大于8则转换为汉字
 if len(UTFStr) >= Dig+8 then
 GBStr=GBStr & ConvChinese(mid(UTFStr,Dig,9))
 Dig=Dig+8
 else
 GBStr=GBStr & mid(UTFStr,Dig,1)
 end if
else
 GBStr=GBStr & mid(UTFStr,Dig,1)
end if
next
UTF2GB=GBStr
end function

function ConvChinese(x)
A=split(mid(x,2),"%")
i=0
j=0
for i=0 to ubound(A)
A(i)=c16to2(A(i))
next
for i=0 to ubound(A)-1
DigS=instr(A(i),"0")
Unicode=""
for j=1 to DigS-1
if j=1 then
A(i)=right(A(i),len(A(i))-DigS)
Unicode=Unicode & A(i)
else
i=i+1
A(i)=right(A(i),len(A(i))-2)
Unicode=Unicode & A(i)
end if
next

if len(c2to16(Unicode))=4 then
ConvChinese=ConvChinese & chrw(int("&H" & c2to16(Unicode)))
else
ConvChinese=ConvChinese & chr(int("&H" & c2to16(Unicode)))
end if
next
end function

function c2to16(x)
 i=1
 for i=1 to len(x) step 4
 c2to16=c2to16 & hex(c2to10(mid(x,i,4)))
 next
end function

function c2to10(x)
 c2to10=0
 if x="0" then exit function
 i=0
 for i= 0 to len(x) -1
 if mid(x,len(x)-i,1)="1" then c2to10=c2to10+2^(i)
 next
end function

function c16to2(x)
 i=0
 for i=1 to len(trim(x))
 tempstr= c10to2(cint(int("&h" & mid(x,i,1))))
 do while len(tempstr)<4
 tempstr="0" & tempstr
 loop
 c16to2=c16to2 & tempstr
 next
end function

function c10to2(x)
mysign=sgn(x)
x=abs(x)
DigS=1
do
if x<2^DigS then
exit do
else
DigS=DigS+1
end if
loop
tempnum=x

i=0
for i=DigS to 1 step-1
if tempnum>=2^(i-1) then
tempnum=tempnum-2^(i-1)
c10to2=c10to2 & "1"
else
c10to2=c10to2 & "0"
end if
next
if mysign=-1 then c10to2="-" & c10to2
end function

Function toUTF8(szInput)
 Dim wch, uch, szRet
 Dim x
 Dim nAsc, nAsc2, nAsc3
 '如果输入参数为空，则退出函数
 If szInput = "" Then
 toUTF8 = szInput
 Exit Function
 End If
 '开始转换
 For x = 1 To Len(szInput)
 '利用mid函数分拆GB编码文字
 wch = Mid(szInput, x, 1)
 '利用ascW函数返回每一个GB编码文字的Unicode字符代码
 '注：asc函数返回的是ANSI 字符代码，注意区别
 nAsc = AscW(wch)
 If nAsc < 0 Then nAsc = nAsc + 65536

 If (nAsc And &HFF80) = 0 Then
 szRet = szRet & wch
 Else
 If (nAsc And &HF000) = 0 Then
 uch = "%" & Hex(((nAsc \ 2 ^ 6)) Or &HC0) & Hex(nAsc And &H3F Or &H80)
 szRet = szRet & uch
 Else
 'GB编码文字的Unicode字符代码在0800 - FFFF之间采用三字节模版
 uch = "%" & Hex((nAsc \ 2 ^ 12) Or &HE0) & "%" & _
 Hex((nAsc \ 2 ^ 6) And &H3F Or &H80) & "%" & _
 Hex(nAsc And &H3F Or &H80)
 szRet = szRet & uch
 End If
 End If
 Next

 toUTF8 = szRet
End Function

function chinese2unicode(Str)
dim i
dim Str_one
dim Str_unicode
if(isnull(Str)) then
 exit function
end if
for i=1 to len(Str)
 Str_one=Mid(Str,i,1)
 Str_unicode=Str_unicode&chr(38)
 Str_unicode=Str_unicode&chr(35)
 Str_unicode=Str_unicode&chr(120)
 Str_unicode=Str_unicode& Hex(ascw(Str_one))
 Str_unicode=Str_unicode&chr(59)
next
chinese2unicode=Str_unicode
end function

Function URLDecode(enStr)
dim deStr
dim c,i,v
deStr=""
for i=1 to len(enStr)
c=Mid(enStr,i,1)
if c="%" then
 v=eval("&h"+Mid(enStr,i+1,2))
 if v<128 then
 deStr=deStr&chr(v)
 i=i+2
 else
 if isvalidhex(mid(enstr,i,3)) then
 if isvalidhex(mid(enstr,i+3,3)) then
 v=eval("&h"+Mid(enStr,i+1,2)+Mid(enStr,i+4,2))
 deStr=deStr&chr(v)
 i=i+5
 else
 v=eval("&h"+Mid(enStr,i+1,2)+cstr(hex(asc(Mid(enStr,i+3,1)))))
 deStr=deStr&chr(v)
 i=i+3
 end if
 else
 destr=destr&c
 end if
 end if
else
 if c="+" then
 deStr=deStr&" "
 else
 deStr=deStr&c
 end if
end if
next
URLDecode=deStr
end function

function isvalidhex(str)
dim c
isvalidhex=true
str=ucase(str)
if len(str)<>3 then isvalidhex=false:exit function
if left(str,1)<>"%" then isvalidhex=false:exit function
c=mid(str,2,1)
if not (((c>="0") and (c<="9")) or ((c>="A") and (c<="Z"))) then isvalidhex=false:exit function
c=mid(str,3,1)
if not (((c>="0") and (c<="9")) or ((c>="A") and (c<="Z"))) then isvalidhex=false:exit function
end function