function popup(url, attribs) {
  popupWin = window.open(url, 'popupWin', attribs);
}

function popupImg(imgID) {
  var imgSrc = "/img/coffins/coffin" + imgID + ".jpg";
  popup(imgSrc, "width=444,height=307");
}

function bookmark() {
  if (document.all)
    window.external.AddFavorite(window.location, document.title);
  else
    alert("Sorry, this function only works with MS Internet Explorer. Users of other browsers will need to bookmark this page manually.");
}