active = "";
function topRoll(img,action) {
  if (action == 'over') {
    newSrc = "/res/images/topnav_" + img + "-on.gif"
  } else if (img != active) {
    newSrc = "/res/images/topnav_" + img + "-off.gif"
  }
  document.images[img].src = newSrc;
}
window.onload = function () {
  activate = 0;
  if (active>"") activate = (active=="about")?0:(active=="contact")?0:(active=="legal")?0:1;
  if (activate) topRoll(active,'over');
};