tickler, sorry, frames mean it's published on your domain (just like a magazine accepting a pre-made page from someone else... it doesn't negate the responsiblity).  For a layperson standing on the outside, the images would appear to be on your domain, and that is enough for me 
 
SERIOUSLY:  Don't use tricks or "sneaky" ways to try to get around this.  Face it head on.
Alex