Alternate text for custom icons on the web

Now that Release 6 lets us put our own custom graphics into view columns, can someone please tell me whether/how we can supply alternate text for these custom graphics that works in web browsers.

I’ve tried changing the name of the graphic to something meaningful like “Action Needed”, and keeping the filename “actm.gif” as the alias for the image resource. This works fine in the Notes client, provided we’ve enabled the user preference “Enable Icon pop-up help in View”, but it doesn’t work in web browsers.

If it’s a case of supplying alt= tags, then fine, but where do I put them - in the column formula, or in the image alias, or somewhere else ?

Any help much appreciated

Subject: Alternate text for custom icons on the web

instead of using the custom icon name by itself, just pass the full IMG tag, including the name of the image, its path and the alt tag (preferably stored in the document and not calculated in the view column for performance reasons.