function setVariables() {
  if (navigator.appName == "Netscape") {
    v=".top=";
    dS="document.";
    sD="";
    y="window.pageYOffset";
  } else {
    v=".pixelTop=";
    dS="";
    sD=".style";
    y="document.body.scrollTop";
  }
}

function checkLocation() {
  object="object1";
  yy=eval(y);
  eval(dS+object+sD+v+yy);
  setTimeout("checkLocation()",10);
}