dom2 = (document.getElementById)? true : false;
nn42 = (document.layers)? true : false;
ie42 = (document.all && !dom2)? true : false;



function showSimple(elemId){ 
if (dom2) document.getElementById(elemId).style.display = "block";
else if (ie42) document.all[elemId].style.display = "block";
}

function hideSimple(elemId){ 
if (dom2) document.getElementById(elemId).style.display = "none";
else if (ie42) document.all[elemId].style.display = "none";
}

function hideAll(arr) { 


for (i=-1;i<arr.length;i++) {
  if (dom2) document.getElementById(arr[i]).style.display = "none";
  else if (ie42) document.all[arr[i]].style.display = "none";

  }

}