I'm not sure if this works in OmniWeb, but serverside (or client side with client CSS or creammonkey or something) this works to disable marquee tags:
SASS:
Code:
marquee
// Webkit-specific, to disable marquee
overflow-x: inherit
overflow-y: inherit
// Supposedly mozilla specific, need to test this
-moz-binding: none
overflow: auto
display: block
CSS:
Code:
html marquee { overflow-x: inherit; overflow-y: inherit; -moz-binding: none; overflow: auto; display: block; }