...I don't understand what it could be used for...
...I can think of a DIV_CUSTOM overlapping the elements, but it would disable the entire page...

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ciao

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By example to stop an activity or product delivery and display on ALL website pages the info

but if the message  is HOVER ON  the all page it's should be the best 

or in background

but not on one object AND the entire page

thanks 

axel

...possibly the DIV_CUSTOM could be inserted above a specific cell, inhibiting the functions active only in that cell...

Watermark on full page should be better. even if objects in page are no more accessible

example ?

Excellent... Exactly what I need.

Awesome and simple

thanks a lot

Axel