After the error message and the faq 'was changed.
FAQ 14.1question
Why can not I use the HTML tags, JavaScript or Flash in LiveJournal?
[faq] 14.2answer
Scripting languages Scripting languages can be used to retrieve the cookies of other users, and this may compromise the security of the account of any user who visits the page.
developers have sought alternative methods that would allow the use of these languages but have not found a system that would allow the script while locked up safe and that those responsible for security risks.
Markers
LiveJournal prohibits the use of various HTML tags: \u0026lt;iframe>, \u0026lt;embed>, \u0026lt;object>, and some attributes of the marker \u0026lt;div>. Because of these restrictions, you can insert into your post music, video or other content only through active specific services.
If you want to write the post with musical content (or video files from other providers) must first upload the file to another site and then provide hyperlinks to these files .
[faq] 14.3summary
In general, you can not use scripting languages (eg JavaScript) or HTML to insert objects (Eg Flash) on LiveJournal. Because this code could pose a risk to the safety of other users, it is deprived of your custom styles, the override, posts, comments and user information before they are sent to the web browser. However you can add a video through specialized sites that offer video hosting services.