Hide/Show objects - speed issue

[Barry Levine]

I have a number of image objects that I need to hide and show at 
particular times. What would be the most rapid method of doing so? 
Currently I'm calling a separate script in my stack which locks the 
screen, sets the visible of the images to false (using a loop), and 
unlocks the screen. Even so, it seems to take about two seconds to hide 
six images. Any ideas?

Thanks,
Barry