var N = (document.all) ? 0 : 1;

function swap_Img(imgSrc) {
  if (N)
  {
    topRightFrame.document["headerLyr"].document.images["headerImg"].src = imgSrc;
  }
  else
  {
    if (topRightFrame.document.images["headerImg"])
    {
      topRightFrame.document.images["headerImg"].src = imgSrc;
    }
  }
}

function hide_Btn() {
  var arg = hide_Btn.arguments;
  a = leftFrame.MM_findObj(arg[1]);
  if (a) {
    if (arg[0] == 0) {
      if(N) {
        a.visibility = "hidden";
      } else {
        a.style.visibility = "hidden";
      }
    } else {
      if(N) {
        a.visibility = "visible";
      } else {
        a.style.visibility = "visible";
      }
    }
  }
}