List        foo = {1,2,9,10,11,12,8}
List        bar = {3,4,5,6,7,8}


echo( IsAnyOverlap(foo,bar) )



function Boolean IsAnyOverlap( List a, List b )
	Boolean found = FALSE
	List    inner
	List    outter
	Dynamic item


	if ( ( IsDefined( a ) ) || ( IsDefined( b ) ) )

		//it doesn't matter which is outter, so make smaller one of the two outter

		if ( Length( a ) < Length( b ) )

			outter = a
			inner = b

		else

			outter = b
			inner = a

		end

		for item in outter

			found = item in inner

			if ( found )

				break

			end

		end

	end

	return found

end