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Option Explicit
Rem ����
Dim nImgWidth,nImgHeight
Const nSaturation = 100											' ɫ�ʱ��Ͷ�
Const nBlankNoisyDotOdds = 0.0										' �հ״������
Const nColorNoisyDotOdds = 0.0 										' ��ɫ�������
Const nNoisyLineCount =3										' ����������
Const nCharMin = 5											' ��������С�ַ�����
Const nCharMax = 5											' ����������ַ�����
Const nSpaceX = 2											' �������ߵĿհ׿���
Const nSpaceY = 2											' �������ߵĿհ׿���
IF Isnumeric(Request("t0")) And Request("t0")<>"" Then nImgWidth =Request("t0")	Else nImgWidth=64	' ����������
IF Isnumeric(Request("t1")) And Request("t1")<>"" Then nImgHeight=Request("t1")	Else nImgHeight=18	' �������߶�				
Const nCharWidthRandom = 16										' �ַ����������
Const nCharHeightRandom = 16										' �ַ��߶������
Const nPositionXRandom =0										' ����������
Const nPositionYRandom =0										' ����������
Const nAngleRandom = 0        									 	' �ʻ��Ƕ������
Const nLengthRandom = 0        										' �ʻ����������(�ٷֱ�)
Const nColorHue = -2											' ��ʾ��֤���ɫ��(-1��ʾ���ɫ��, -2��ʾ�Ҷ�ɫ��)
Const cCharSet = "0123456789"    									' ������֤����ַ���


Rem ---------------------

Randomize

Dim Buf(), DigtalStr
Dim Lines(), LineCount
Dim CursorX, CursorY, DirX, DirY, nCharCount, nPixelWidth, nPixelHeight, PicWidth, PicHeight
nCharCount = nCharMin + CInt(Rnd * (nCharMax - nCharMin))
PicWidth = nImgWidth + 2 * nSpaceX
PicHeight = nImgHeight + 2 * nSpaceY

Call CreatValidCode("zengscode")

Sub CDGen_Reset()
	' ��λʸ���ʺͻ�������
	LineCount = 0
	CursorX = 0
	CursorY = 0
	' ��ʼ�Ĺ�ʷ����Ǵ�ֱ����
	DirX = 0
	DirY = 1
End Sub

Sub CDGen_Clear()
	' ���λͼ����
	Dim i, j
	ReDim Buf(PicHeight - 1, PicWidth - 1)

	For j = 0 To PicHeight - 1
		For i = 0 To PicWidth - 1
			Buf(j, i) = 0
		Next
	Next
End Sub

Sub CDGen_PSet(X, Y)
	' ��λͼ�����ϻ���
	If X >= 0 And X < PicWidth And Y >= 0 And Y < PicHeight Then Buf(Y, X) = 1
End Sub

Sub CDGen_Line(X1, Y1, X2, Y2)
	' ��λͼ�����ϻ���
	Dim DX, DY, DeltaT, i

	DX = X2 - X1
	DY = Y2 - Y1
	If Abs(DX) > Abs(DY) Then DeltaT = Abs(DX) Else DeltaT = Abs(DY)
	If DeltaT = 0 Then
		CDGen_PSet CInt(X1),CInt(Y1)
	Else
		For i = 0 To DeltaT
			CDGen_PSet CInt(X1 + DX * i / DeltaT), CInt(Y1 + DY * i / DeltaT)
		Next
	End If
End Sub

Sub CDGen_FowardDraw(nLength)
	' ����ǰ��ʷ������ָ�����Ȳ��ƶ���ʣ�������ʾ��������/�������»��ƣ�������ʾ��������/�������ϻ���
	nLength = nLength * (1 + (Rnd * 2 - 1) * nLengthRandom / 100)
	ReDim Preserve Lines(3, LineCount)
	Lines(0, LineCount) = CursorX
	Lines(1, LineCount) = CursorY
	CursorX = CursorX + DirX * nLength
	CursorY = CursorY + DirY * nLength
	Lines(2, LineCount) = CursorX
	Lines(3, LineCount) = CursorY
	LineCount = LineCount + 1
End Sub

Sub CDGen_SetDirection(nAngle)
	' ��ָ���Ƕ��趨���ʷ���, ������ʾ��Ե�ǰ����˳ʱ��ı䷽�򣬸�����ʾ��Ե�ǰ������ʱ��ı䷽��
	Dim DX, DY

	nAngle = (nAngle + (Rnd * 2 - 1) * nAngleRandom) / 180 * 3.1415926
	DX = DirX
	DY = DirY
	DirX = DX * Cos(nAngle) - DY * Sin(nAngle)
	DirY = DX * Sin(nAngle) + DY * Cos(nAngle)
End Sub

Sub CDGen_MoveToMiddle(nActionIndex, nPercent)
	' �����ʹ���ƶ���ָ���������м���ϣ�nPercentΪ�м�λ�õİٷֱ�
	Dim DeltaX, DeltaY

	DeltaX = Lines(2, nActionIndex) - Lines(0, nActionIndex)
	DeltaY = Lines(3, nActionIndex) - Lines(1, nActionIndex)
	CursorX = Lines(0, nActionIndex) + DeltaX * nPercent / 100
	CursorY = Lines(1, nActionIndex) + DeltaY * Abs(DeltaY) * nPercent / 100
End Sub

Sub CDGen_MoveCursor(nActionIndex)
	' �����ʹ���ƶ���ָ����������ʼ����
	CursorX = Lines(0, nActionIndex)
	CursorY = Lines(1, nActionIndex)
End Sub

Sub CDGen_Close(nActionIndex)
	' ����ǰ���λ����ָ����������ʼ��պϲ��ƶ����
	ReDim Preserve Lines(3, LineCount)
	Lines(0, LineCount) = CursorX
	Lines(1, LineCount) = CursorY
	CursorX = Lines(0, nActionIndex)
	CursorY = Lines(1, nActionIndex)
	Lines(2, LineCount) = CursorX
	Lines(3, LineCount) = CursorY
	LineCount = LineCount + 1
End Sub

Sub CDGen_CloseToMiddle(nActionIndex, nPercent)
	' ����ǰ���λ����ָ���������м��պϲ��ƶ���ʣ�nPercentΪ�м�λ�õİٷֱ�
	Dim DeltaX, DeltaY

	ReDim Preserve Lines(3, LineCount)
	Lines(0, LineCount) = CursorX
	Lines(1, LineCount) = CursorY
	DeltaX = Lines(2, nActionIndex) - Lines(0, nActionIndex)
	DeltaY = Lines(3, nActionIndex) - Lines(1, nActionIndex)
	CursorX = Lines(0, nActionIndex) + Sgn(DeltaX) * Abs(DeltaX) * nPercent / 100
	CursorY = Lines(1, nActionIndex) + Sgn(DeltaY) * Abs(DeltaY) * nPercent / 100
	Lines(2, LineCount) = CursorX
	Lines(3, LineCount) = CursorY
	LineCount = LineCount + 1
End Sub

Sub CDGen_Flush(X0, Y0)
	' ���յ�ǰ�Ļ��ʶ������л���λͼ����
	Dim MaxX, MinX, MaxY, MinY
	Dim DeltaX, DeltaY, StepX, StepY, OffsetX, OffsetY
	Dim i

	MaxX = MinX = MaxY = MinY = 0
	For i = 0 To LineCount - 1
		If MaxX < Lines(0, i) Then MaxX = Lines(0, i)
		If MaxX < Lines(2, i) Then MaxX = Lines(2, i)
		If MinX > Lines(0, i) Then MinX = Lines(0, i)
		If MinX > Lines(2, i) Then MinX = Lines(2, i)
		If MaxY < Lines(1, i) Then MaxY = Lines(1, i)
		If MaxY < Lines(3, i) Then MaxY = Lines(3, i)
		If MinY > Lines(1, i) Then MinY = Lines(1, i)
		If MinY > Lines(3, i) Then MinY = Lines(3, i)
	Next
	DeltaX = MaxX - MinX
	DeltaY = MaxY - MinY
	If DeltaX = 0 Then DeltaX = 1
	If DeltaY = 0 Then DeltaY = 1
	MaxX = MinX
	MaxY = MinY
	If DeltaX > DeltaY Then
		StepX = (nPixelWidth - 2) / DeltaX
		StepY = (nPixelHeight - 2) / DeltaX
		OffsetX = 0
		OffsetY = (DeltaX - DeltaY) / 2
	Else
		StepX = (nPixelWidth - 2) / DeltaY
		StepY = (nPixelHeight - 2) / DeltaY
		OffsetX = (DeltaY - DeltaX) / 2
		OffsetY = 0
	End If
	For i = 0 To LineCount - 1
		Lines(0, i) = Round((Lines(0, i) - MaxX + OffsetX) * StepX, 0)
		Lines(1, i) = Round((Lines(1, i) - MaxY + OffsetY) * StepY, 0)
		Lines(2, i) = Round((Lines(2, i) - MinX + OffsetX) * StepX, 0)
		Lines(3, i) = Round((Lines(3, i) - MinY + OffsetY) * StepY, 0)
		CDGen_Line Lines(0, i) + X0 + 1, Lines(1, i) + Y0 + 1, Lines(2, i) + X0 + 1, Lines(3, i) + Y0 + 1
	Next
End Sub

Sub CDGen_Char(cChar, X0, Y0)
	' ��ָ�����괦����ָ���ַ���λͼ����
	CDGen_Reset
	Select Case cChar
	Case "0"
		CDGen_SetDirection -60                            ' ��ʱ��60��(����ڴ�ֱ��)
		CDGen_FowardDraw -0.7                             ' ���������0.7����λ
		CDGen_SetDirection -60                            ' ��ʱ��60��
		CDGen_FowardDraw -0.7                             ' ���������0.7����λ
		CDGen_SetDirection 120                            ' ˳ʱ��120��
		CDGen_FowardDraw 1.5                              ' ����1.5����λ
		CDGen_SetDirection -60                            ' ��ʱ��60��
		CDGen_FowardDraw 0.7                              ' ����0.7����λ
		CDGen_SetDirection -60                            ' ˳ʱ��120��
		CDGen_FowardDraw 0.7                              ' ����0.7����λ
		CDGen_Close 0                                     ' ��յ�ǰ�����0��(0��ʼ)
	Case "1"
		CDGen_SetDirection -90                            ' ��ʱ��90��(����ڴ�ֱ��)
		CDGen_FowardDraw 0.5                              ' ����0.5����λ
		CDGen_MoveToMiddle 0, 50                          ' �ƶ����ʵ�λ�õ���0��(0��ʼ)��50%��
		CDGen_SetDirection 90                             ' ��ʱ��90��
		CDGen_FowardDraw -1.4                             ' ���������1.4����λ
		CDGen_SetDirection 30                             ' ��ʱ��30��
		CDGen_FowardDraw 0.4                              ' ����0.4����λ
	Case "2"
		CDGen_SetDirection 45                             ' ˳ʱ��45��(����ڴ�ֱ��)
		CDGen_FowardDraw -0.7                             ' ���������0.7����λ
		CDGen_SetDirection -120                           ' ��ʱ��120��
		CDGen_FowardDraw 0.4                              ' ����0.4����λ
		CDGen_SetDirection 60                             ' ˳ʱ��60��
		CDGen_FowardDraw 0.6                              ' ����0.6����λ
		CDGen_SetDirection 60                             ' ˳ʱ��60��
		CDGen_FowardDraw 1.6                              ' ����1.6����λ
		CDGen_SetDirection -135                           ' ��ʱ��135��
		CDGen_FowardDraw 1.0                              ' ����1.0����λ
	Case "3"
		CDGen_SetDirection -90                            ' ��ʱ��90��(����ڴ�ֱ��)
		CDGen_FowardDraw 0.8                              ' ����0.8����λ
		CDGen_SetDirection 135                            ' ˳ʱ��135��
		CDGen_FowardDraw 0.8                              ' ����0.8����λ
		CDGen_SetDirection -120                           ' ��ʱ��120��
		CDGen_FowardDraw 0.6                              ' ����0.6����λ
		CDGen_SetDirection 80                             ' ˳ʱ��80��
		CDGen_FowardDraw 0.5                              ' ����0.5����λ
		CDGen_SetDirection 60                             ' ˳ʱ��60��
		CDGen_FowardDraw 0.5                              ' ����0.5����λ
		CDGen_SetDirection 60                             ' ˳ʱ��60��
		CDGen_FowardDraw 0.5                              ' ����0.5����λ
	Case "4"
		CDGen_SetDirection 20                             ' ˳ʱ��20��(����ڴ�ֱ��)
		CDGen_FowardDraw 0.8                              ' ����0.8����λ
		CDGen_SetDirection -110                           ' ��ʱ��110��
		CDGen_FowardDraw 1.2                              ' ����1.2����λ
		CDGen_MoveToMiddle 1, 60                          ' �ƶ����ʵ�λ�õ���1��(0��ʼ)��60%��
		CDGen_SetDirection 90                             ' ˳ʱ��90��
		CDGen_FowardDraw 0.7                              ' ����0.7����λ
		CDGen_MoveCursor 2                                ' �ƶ����ʵ���2��(0��ʼ)�Ŀ�ʼ��
		CDGen_FowardDraw -1.5                             ' ���������1.5����λ
	Case "5"
		CDGen_SetDirection 90                             ' ˳ʱ��90��(����ڴ�ֱ��)
		CDGen_FowardDraw 1.0                              ' ����1.0����λ
		CDGen_SetDirection -90                            ' ��ʱ��90��
		CDGen_FowardDraw 0.8                              ' ����0.8����λ
		CDGen_SetDirection -90                            ' ��ʱ��90��
		CDGen_FowardDraw 0.8                              ' ����0.8����λ
		CDGen_SetDirection 30                             ' ˳ʱ��30��
		CDGen_FowardDraw 0.4                              ' ����0.4����λ
		CDGen_SetDirection 60                             ' ˳ʱ��60��
		CDGen_FowardDraw 0.4                              ' ����0.4����λ
		CDGen_SetDirection 30                             ' ˳ʱ��30��
		CDGen_FowardDraw 0.5                              ' ����0.5����λ
		CDGen_SetDirection 60                             ' ˳ʱ��60��
		CDGen_FowardDraw 0.8                              ' ����0.8����λ
	Case "6"
		CDGen_SetDirection -60                            ' ��ʱ��60��(����ڴ�ֱ��)
		CDGen_FowardDraw -0.7                             ' ���������0.7����λ
		CDGen_SetDirection -60                            ' ��ʱ��60��
		CDGen_FowardDraw -0.7                             ' ���������0.7����λ
		CDGen_SetDirection 120                            ' ˳ʱ��120��
		CDGen_FowardDraw 1.5                              ' ����1.5����λ
		CDGen_SetDirection 120                            ' ˳ʱ��120��
		CDGen_FowardDraw -0.7                             ' ���������0.7����λ
		CDGen_SetDirection 120                            ' ˳ʱ��120��
		CDGen_FowardDraw 0.7                              ' ����0.7����λ
		CDGen_SetDirection 120                            ' ˳ʱ��120��
		CDGen_FowardDraw -0.7                             ' ���������0.7����λ
		CDGen_SetDirection 120                            ' ˳ʱ��120��
		CDGen_FowardDraw 0.5                              ' ����0.5����λ
		CDGen_CloseToMiddle 2, 50                         ' ����ǰ����λ�����2��(0��ʼ)��50%�����
	Case "7"
		CDGen_SetDirection 180                            ' ˳ʱ��180��(����ڴ�ֱ��)
		CDGen_FowardDraw 0.3                              ' ����0.3����λ
		CDGen_SetDirection 90                             ' ˳ʱ��90��
		CDGen_FowardDraw 0.9                              ' ����0.9����λ
		CDGen_SetDirection 120                            ' ˳ʱ��120��
		CDGen_FowardDraw 1.3                              ' ����1.3����λ
	Case "8"
		CDGen_SetDirection -60                            ' ��ʱ��60��(����ڴ�ֱ��)
		CDGen_FowardDraw -0.8                             ' ���������0.8����λ
		CDGen_SetDirection -60                            ' ��ʱ��60��
		CDGen_FowardDraw -0.8                             ' ���������0.8����λ
		CDGen_SetDirection 120                            ' ˳ʱ��120��
		CDGen_FowardDraw 0.8                              ' ����0.8����λ
		CDGen_SetDirection 110                            ' ˳ʱ��110��
		CDGen_FowardDraw -1.5                             ' ���������1.5����λ
		CDGen_SetDirection -110                           ' ��ʱ��110��
		CDGen_FowardDraw 0.9                              ' ����0.9����λ
		CDGen_SetDirection 60                             ' ˳ʱ��60��
		CDGen_FowardDraw 0.8                              ' ����0.8����λ
		CDGen_SetDirection 60                             ' ˳ʱ��60��
		CDGen_FowardDraw 0.8                              ' ����0.8����λ
		CDGen_SetDirection 60                             ' ˳ʱ��60��
		CDGen_FowardDraw 0.9                              ' ����0.9����λ
		CDGen_SetDirection 70                             ' ˳ʱ��70��
		CDGen_FowardDraw 1.5	                            ' ����1.5����λ
		CDGen_Close 0                                     ' ��յ�ǰ�����0��(0��ʼ)
	Case "9"
		CDGen_SetDirection 120                            ' ��ʱ��60��(����ڴ�ֱ��)
		CDGen_FowardDraw -0.7                             ' ���������0.7����λ
		CDGen_SetDirection -60                            ' ��ʱ��60��
		CDGen_FowardDraw -0.7                             ' ���������0.7����λ
		CDGen_SetDirection -60                            ' ˳ʱ��120��
		CDGen_FowardDraw -1.5                              ' ����1.5����λ
		CDGen_SetDirection -60                            ' ˳ʱ��120��
		CDGen_FowardDraw -0.7                             ' ���������0.7����λ
		CDGen_SetDirection -60                            ' ˳ʱ��120��
		CDGen_FowardDraw -0.7                              ' ����0.7����λ
		CDGen_SetDirection 120                            ' ˳ʱ��120��
		CDGen_FowardDraw 0.7                             ' ���������0.7����λ
		CDGen_SetDirection -60                            ' ˳ʱ��120��
		CDGen_FowardDraw 0.5                              ' ����0.5����λ
		CDGen_CloseToMiddle 2, 50                         ' ����ǰ����λ�����2��(0��ʼ)��50%�����
	
	End Select
	CDGen_Flush X0, Y0
End Sub

Sub CDGen_Blur()
	' �Բ�����λͼ�����ữ����
	Dim i, j

	For j = 1 To PicHeight - 2
		For i = 1 To PicWidth - 2
			If Buf(j, i) = 0 Then
				If ((Buf(j, i - 1) Or Buf(j + 1, i)) And 1) <> 0 Then
					' �����ǰ���ǿհ׵㣬�����������ĸ�������һ��������ɫ�㣬��õ����ữ����
					Buf(j, i) = 2
				End If
			End If
		Next
	Next
End Sub

Sub CDGen_NoisyLine()
	Dim i
	For i=1 To nNoisyLineCount
		CDGen_Line Rnd * PicWidth, Rnd * PicHeight, Rnd * PicWidth, Rnd * PicHeight
	Next
End Sub

Sub CDGen_NoisyDot()
	' �Բ�����λͼ������㴦��
	Dim i, j, NoisyDot, CurDot

	For j = 0 To PicHeight - 1
		For i = 0 To PicWidth - 1
			If Buf(j, i) <> 0 Then
				If Rnd < nColorNoisyDotOdds Then
					Buf(j, i) = 0
				Else
					Buf(j, i) = nSaturation
				End If
			Else
				If Rnd < nBlankNoisyDotOdds Then
					Buf(j, i) = nSaturation
				Else
					Buf(j, i) = 0
				End If
			End If
		Next
	Next
End Sub

Sub CDGen()
	' ����λͼ����
	Dim i, Ch, w, x, y

	DigtalStr = ""
	CDGen_Clear
	w = nImgWidth / nCharCount

	For i = 0 To nCharCount - 1
		nPixelWidth = w * (1 + (Rnd * 2 - 1) * nCharWidthRandom / 100)
		nPixelHeight = nImgHeight * (1 - Rnd * nCharHeightRandom / 100)
		x = nSpaceX + w * (i + (Rnd * 2 - 1) * nPositionXRandom / 100)
		y = nSpaceY + nImgHeight * (Rnd * 2 - 1) * nPositionYRandom / 100

		Ch = Mid(cCharSet, Int(Rnd * Len(cCharSet)) + 1, 1)
		DigtalStr = DigtalStr + Ch

		CDGen_Char Ch, x, y
	Next
	CDGen_Blur
	CDGen_NoisyLine
	CDGen_NoisyDot
End Sub

Function HSBToRGB(vH, vS, vB)
	' ����ɫֵ��HSBת��ΪRGB
	Dim aRGB(3), RGB1st, RGB2nd, RGB3rd
	Dim nH, nS, nB
	Dim lH, nF, nP, nQ, nT

	vH = (vH Mod 360)
	If vS > 100 Then
		vS = 100
	ElseIf vS < 0 Then
		vS = 0
	End If
	If vB > 100 Then
		vB = 100
	ElseIf vB < 0 Then
		vB = 0
	End If
	If vS > 0 Then
		nH = vH / 60
		nS = vS / 100
		nB = vB / 100
		lH = Int(nH)
		nF = nH - lH
		nP = nB * (1 - nS)
		nQ = nB * (1 - nS * nF)
		nT = nB * (1 - nS * (1 - nF))
		Select Case lH
		Case 0
			aRGB(0) = nB * 255
			aRGB(1) = nT * 255
			aRGB(2) = nP * 255
		Case 1
			aRGB(0) = nQ * 255
			aRGB(1) = nB * 255
			aRGB(2) = nP * 255
		Case 2
			aRGB(0) = nP * 255
			aRGB(1) = nB * 255
			aRGB(2) = nT * 255
		Case 3
			aRGB(0) = nP * 255
			aRGB(1) = nQ * 255
			aRGB(2) = nB * 255
		Case 4
			aRGB(0) = nT * 255
			aRGB(1) = nP * 255
			aRGB(2) = nB * 255
		Case 5
			aRGB(0) = nB * 255
			aRGB(1) = nP * 255
			aRGB(2) = nQ * 255
		End Select
	Else
		aRGB(0) = (vB * 255) / 100
		aRGB(1) = aRGB(0)
		aRGB(2) = aRGB(0)
	End If
	HSBToRGB = ChrB(Round(aRGB(2), 0)) & ChrB(Round(aRGB(1), 0)) & ChrB(Round(aRGB(0), 0))
End Function

Sub CreatValidCode(pSN)
	Dim i, j, CurColorHue

	CDGen
	Session(pSN) = DigtalStr	'��¼��Session

	Dim FileSize, PicDataSize
	PicDataSize = PicWidth * PicHeight * 3
	FileSize = PicDataSize + 54

	' ���BMP�ļ���Ϣͷ
	Response.BinaryWrite ChrB(66) & ChrB(77) & ChrB(FileSize Mod 256) & ChrB((FileSize \ 256) Mod 256) & ChrB((FileSize \ 256 \ 256) Mod 256) & ChrB(FileSize \ 256 \ 256 \ 256) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(54) & ChrB(0) & ChrB(0) & ChrB(0)

	' ���BMPλͼ��Ϣͷ
	Response.BinaryWrite ChrB(40) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(PicWidth Mod 256) & ChrB((PicWidth \ 256) Mod 256) & ChrB((PicWidth \ 256 \ 256) Mod 256) & ChrB(PicWidth \ 256 \ 256 \ 256) & ChrB(PicHeight Mod 256) & ChrB((PicHeight \ 256) Mod 256) & ChrB((PicHeight \ 256 \ 256) Mod 256) & ChrB(PicHeight \ 256 \ 256 \ 256) & ChrB(1) & ChrB(0) & ChrB(24) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(PicDataSize Mod 256) & ChrB((PicDataSize \ 256) Mod 256) & ChrB((PicDataSize \ 256 \ 256) Mod 256) & ChrB(PicDataSize \ 256 \ 256 \ 256) & ChrB(18) & ChrB(11) & ChrB(0) & ChrB(0) & ChrB(18) & ChrB(11) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0)

	' ������λͼ����
	If nColorHue = -1 Then
		CurColorHue = Int(Rnd * 360)
	ElseIf nColorHue <> -2 Then
		CurColorHue = nColorHue
	End If
	For j = 0 To PicHeight - 1
		For i = 0 To PicWidth - 1
			If nColorHue = -2 Then
				Response.BinaryWrite HSBToRGB(0, 0, 100 - Buf(PicHeight - 1 - j, i))
			Else
				Response.BinaryWrite HSBToRGB(CurColorHue, Buf(PicHeight - 1 - j, i), 100)
			End If
		Next
	Next
End Sub
%>