customize "out of stock" message by category or by product

[madmartian]

For most categories, the default "out of stock" message works just fine. However, for items in the "Gallery" category, where each item is a custom made one-of-a-kind item, I want it to say "SOLD". And for items that are no longer available, in the "Discontinued" category, I want it to say "Sold Out". For all other categories "Out of Stock" is correct. Is there any way to base the wording on the category? In lieu of that, is it possible to set the wording on a per-item basis?

Edited September 23, 2015 by madmartian (see edit history)

[Nicolai_P]

.category-23 #availability_value.label-danger{

    display:none;

}

.category-23 div#oosHook::after{

    content:"YOUR OUT OF STOCK CUSTOM MESSAGE";

    background-color: transparent!important;

    border: none!important;

    color: #e60000!important;

    font-weight: 100!important;

    font-size: 15px!Important;

}

Edited June 18, 2017 by Nicolai_P (see edit history)

[madmartian]

Thanks Nicolai. Which file does this need to be added to?