//Define global variables
var timerID = null;
var timerOn = false;
var timecount = 1500;
// Change this to the time delay that you desire
var what = null;
var newbrowser = true;
var check = false; 

function init() { 
 if (document.getElementById) { 
   layerRef="document.getElementByID"; 
   styleSwitch=".style"; 
   what="dom1"; 
 } 
 else if(document.all) { 
   layerRef="document.all"; 
   styleSwitch=".style"; 
   what ="ie4"; 
 } 
 else if(document.layers) { 
   layerRef="document.layers"; 
   styleSwitch=""; 
   what ="ns4"; 
 } 
 else { 
   what="none"; 
   newbrowser = false; 
 } 
check = true; 
} 

// Toggles the layer visibility on 
function showLayer(layerName) { 
 if(check) { 
 if (what =="none") { 
 return; 
 } 
 else if (what == "dom1") { 
 document.getElementById(layerName).style.visibility="visible"; 
 } 
 else { 
 eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"'); 
 } 
 } 
 else { 
 return; 
 } 
 }
 
 // Toggles the layer visibility off 
function hideLayer(layerName) { 
 if(check) { 
 if (what =="none") { 
 return; 
 } 
 else if (what == "dom1") { 
 document.getElementById(layerName).style.visibility="hidden"; 
 } 
 else { 
 eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"'); 
 } 
 } 
 else { 
 return; 
 } 
 }
 
function startTime()
{
  if (timerOn == false)
  {
    timerID=setTimeout( "hideAll()" , timecount); 
    timerOn = true; 
  } 
} 
 
function stopTime()
{ 
  if (timerOn)
  { 
    clearTimeout(timerID); 
    timerID = null; 
    timerOn = false; 
  } 
} 
 
function onLoad()
{ 
  init(); 
}