spm_orthviews('Xhairs','off') should be what you are looking for.
In SPM8, there is a contextual menu accessible through a right click on
the overlay that allows to perform the same operation.
> Dear all,
> I have a question about result overlay in sections. Could anyone tell me
> how to hide the crosshair (namely, the blue line, as shown in attached
> file) in the figure?
> Many thanks!
> Chang Cai
Guillaume Flandin, PhD
Wellcome Trust Centre for Neuroimaging
University College London
12 Queen Square
London WC1N 3BG