On 2020-01-13, Gerry Hickman wrote:
> Browsing to this page, with SeaMonkey/2.49.4, the images seem to be
> missing? I think they're using a "data-src" tag.
>
> https://developer.ibm.com/tutorials/l-virtual-filesystem-switch/
Those are "lazy-loaded" images, handled by javascript code.
>From a quick glance at the page source, the image loading code uses
IntersectionObserver, which was introduced in Firefox 55 [1].
As Seamonkey 2.49 is "based on" Firefox 52, the lack of
IntersectionObserver is likely the problem. But it will probably work
with Seamonkey 2.53 ("based on" Firefox 56).
[1]
https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API#Browser_compatibility
--
Nuno Silva
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