If X1 > X2 && Y1 > Y2 => P (X1-X2/Y1-Y2)
If X1 < X2 && Y1 > Y2 => P (X2-X1/Y1-Y2)
If X1 > X2 && Y1 < Y2 => P (X1-X2/Y2-Y1)
If X1 < X2 && Y1 < Y2 => P (X2-X1/Y2-Y1)
MfG
If X1 > X2 && Y1 > Y2 => P (X1-X2/Y1-Y2)
If X1 < X2 && Y1 > Y2 => P (X2-X1/Y1-Y2)
If X1 > X2 && Y1 < Y2 => P (X1-X2/Y2-Y1)
If X1 < X2 && Y1 < Y2 => P (X2-X1/Y2-Y1)
MfG
Toastbrot (22.06.2010)