Ahh, we were really close with:
h1:before {
content: url('bullet.gif');
}
...but it appears as if our friend IE won't do it:
http://www.westciv.com.au/style_master/academy/browser_support/generated_content.html
So this means all the bullets go back in as images withing <h1> and the
arrows go back in as <img> everywhere in the side menu.
Paul