function strToHex(str)
	dim i, char, hexValue
	for i=1 to len(str)
		char = hex(asc(mid(str, i, 1)))
		if len(char) = 1 then : char = "0" & char : end if
		hexValue = hexValue & char
	next

	strToHex = hexValue
end function

function hexTostr(hexStr)
	dim i, char, hexValue
	for i=1 to len(hexStr) step 2
		char = mid(hexStr, i, 2)
		
		if char > "80" then
			i = i+2
			char = char & mid(hexStr, i, 2)
		end if
	
		Execute "char = &H" & char
		hexValue = hexValue & chr(char)
	next

	HexTostr = hexValue
end function
	
function URLEncoding(vstrIn)
    strReturn = ""
    For i = 1 To Len(vstrIn)
        ThisChr = Mid(vStrIn,i,1)
        If Abs(Asc(ThisChr)) < &HFF Then
            strReturn = strReturn & ThisChr
        Else
            innerCode = Asc(ThisChr)
            If innerCode < 0 Then
                innerCode = innerCode + &H10000
            End If
            Hight8 = (innerCode  And &HFF00)\ &HFF
            Low8 = innerCode And &HFF
            strReturn = strReturn & "%" & Hex(Hight8) &  "%" & Hex(Low8)
        End If
    Next
    URLEncoding = strReturn
end function

function bytes2BSTR(vIn)
    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