Now there is an error in the javascript.
There is this bit:
    // Get the set of comments out of the body
    if(body.children)
        divs = body.children.tags('DIV');
    else if(body.childNodes) {
        divs = new Array();
        for(var i = 0; i < body.childNodes.length; ++i)
            if(body.childNodes[i].tagName == 'DIV')
                divs.push(body.childNodes[i]);
    }


Where the if is trying to catch IE which implements children. Firefox didn't use to have that property at all and instead used childNodes. Now they do seem to have implemented a children property, but it does not have a method called tags, which apparently IE has. The cure is probably to swap the if and else if.

Do we have a proper way to access the dynamic-comments.js file? Else I can make a copy, upload it, and change the 'src' parameter in the appropriate <script> tag.