function trOnMouseOver() {
    this.className = "selected";
}

function trOnMouseOut() {
    this.className = "";
}

function activateHighlight() {
    var listDiv = document.getElementById("list");
    var listTbody = null;
    if (listDiv != null) {
        for (var ni = new NodeIterator(listDiv); ni.hasNext(); ) {
            var n = ni.next();
            if (n.tagName == "TBODY") {
                for (var nj = new NodeIterator(n); nj.hasNext(); ) {
                    var tag = nj.next();
                    if (tag.className != "action" && tag.tagName) {
                        tag.onmouseover = trOnMouseOver;
                        tag.onmouseout = trOnMouseOut;
                    }
                }
                break;
            }
        }
    }
}