FWIW, I find this subject interesting. Why? Because it illustrates 
something about the "Sociology of Programming".

My general impression is that z-index is often used in a BIG NUMBERS way. 
Practically, when you want something always foregrounded most often one 
thinks of a big number when testing. I start at 1,001. Bad practice, but 
its widely done. 

On SHARED code bases that can be problematic and frustrating for careful 
folk like you. 

Just a thought: an INDEX of Z-INDEXES used in base TW might be useful?

Best wishes
Josiah

TonyM wrote:
>
> Thanks Coda,
>
> I did not realise how much stacking can occur. I expect I should try 999 
> to allow alerts to remain visible.
>
> 550 but not 500 works in this case
>
>

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