var toggleDiff = function (_theLinkElm)
{
  cssU.toggleClass(document.getElementById("foobar-diff"), "diff-on", "diff-off");
  _theLinkElm.innerHTML = (_theLinkElm.innerHTML == "View diff") ? "Hide diff" : "View diff";
  return false;
};


var sideBySide = function (_theLinkElm)
{
  cssU.toggleClass(document.body, "overlay", "sidebyside");
  _theLinkElm.innerHTML = (_theLinkElm.innerHTML == "Side-by-Side") ? "Overlay mode" : "Side-by-Side";
  return false;
};