function get_obj_style(name) {
  if (document.getElementById) {
    obj=document.getElementById(name).style;
  } else if (document.layers) {
    obj=document.layers[name];
  } else if (document.all) {
    obj=document.all[name].style;
  } else {
    obj=false;
  }
  return obj;
}

function hide_obj(name) {
  var agt=navigator.userAgent.toLowerCase();
  var is_ie5 = ((parseInt(navigator.appVersion) == 4) && (agt.indexOf("msie 5.0")!=-1) && (agt.indexOf("opera") == -1));

  if (document.getElementById && !is_ie5) {
    obj=document.getElementById(name).style.visibility = "hidden";
    document.getElementById(name).style.display = "none";
  } else if (document.layers) {
    obj=document.layers[name].visibility = "hide";
    document.layers[name].display = "none";
  } else if (document.all) {
    obj=document.all[name].style.visibility = "hidden";
    document.all[name].display = "none";
  } else {
    obj=false;
  }
}

function show_obj(name) {
  var agt=navigator.userAgent.toLowerCase();
  var is_ie5 = ((parseInt(navigator.appVersion) == 4) && (agt.indexOf("msie 5.0")!=-1) && (agt.indexOf("opera") == -1));
  if (document.getElementById && !is_ie5) {
    obj=document.getElementById(name).style.visibility = "visible";
    document.getElementById(name).style.display = "inline";
  } else if (document.layers) {
    obj=document.layers[name].visibility = "show";
    document.layers[name].display = "inline";
  } else if (document.all) {
    obj=document.all[name].style.visibility = "visible";
    document.all[name].display = "inline";
  } else {
    obj=false;
  }
}