// All the damn options...
var isNS4 = (document.layers) ? true : false;
var isIE4 = (document.all && !document.getElementById) ? true : false;
var isIE5 = (document.all && document.getElementById) ? true : false;
var isNS6 = (!document.all && document.getElementById) ? true : false;
var isNS = (isNS4 || isNS6);
var isIE = (isIE4 || isIE5);

function ShowHide6(object, YesNo) {
   // My code...
   var IsVis = YesNo ? 'visible' : 'hidden';
   if (isNS4) {
      document.layers[object].visibility = IsVis;
   } else if (isIE4) {
      document.all[object].style.visibility = IsVis;
   } else if (isNS6 || isIE5 || isFirefox()) {
      var elm = document.getElementById(object);
      elm.style.visibility = IsVis;
   }
   return;
}

function IsVisible6(object) {
   // Do it...
   if (isNS4) {
      return (document.layers[object].visibility == 'visible');
   } else if (isIE4) {
      return (document.all[object].style.visibility == 'visible');
   } else if (isNS6 || isIE5) {
      var elm = document.getElementById(object);
      return (elm.style.visibility == 'visible');
   }
   return false;
}