Hi Andrei,

> Michael is it any script to turn on/of image reference?

There's one here: http://kyticka.webzdarma.cz/3d/moi/#HideBI

Also if you want a keyboard shortcut for toggling just one specific image on or off instead of toggling all, there's a script for that here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=2036.22

- Michael