Your HTML is using the ID of 'wizard' twice, once for a P tag and once for a DIV tag.
Ah, good catch! I added that ID for the P tag very recently, when adding a 'table of content' to quickly go to the desired section, because the article was getting too long for comfort. But I had not realized the 'wizard' label was already in use. As in cases like this the browser (or at least FireFox) only recognizes the first occurrence of the ID, the button was operating on the wrong text section.
The problem that escaped characters like < are replaced by the character they stand for on storing (or retrieving for viewing?) from the database still exists, though. So it is still not possible to repair the damage to the 'Embedding' section. (Both with JavaScript on and off.)
Ah, good catch! I added that ID for the P tag very recently, when adding a 'table of content' to quickly go to the desired section, because the article was getting too long for comfort. But I had not realized the 'wizard' label was already in use. As in cases like this the browser (or at least FireFox) only recognizes the first occurrence of the ID, the button was operating on the wrong text section.
The problem that escaped characters like < are replaced by the character they stand for on storing (or retrieving for viewing?) from the database still exists, though. So it is still not possible to repair the damage to the 'Embedding' section. (Both with JavaScript on and off.)