My First Macro For OpenWiki
It makes use of the <OBJECT> tag recommended by the W3C for generic embedding of objects, including HTML documents, images, flashes, etc. Not all browsers support all the common MIME types (even Mozilla), and IE is especially poor at displaying <OBJECT> tags (but I don't care =P).
If you are using OpenWiki, give it a try! Go to my wiki to see how it looks like!