ns4 = (document.layers) ? true:false 
ie4 = (document.all) ? true:false 
ng5 = (document.getElementById) ? true:false 

function hideExecBios() { 
if (ng5) document.getElementById('execBios0').style.display = "none" 
else if (ns4) document.execBios0.display = "none" 
else if (ie4) execBios0.style.display ="none" 

if (ng5) document.getElementById('execBios1').style.display = "none" 
else if (ns4) document.execBios1.display = "none" 
else if (ie4) execBios1.style.display ="none" 
}

function showExecBios(n) { 
hideExecBios(); 
if (ng5) document.getElementById('execBios' + n).style.display = "block"; 
else if (ns4) document.layers["execBios" + n].display = "block"; 
else if (ie4) document.all["execBios" + n].style.display = "block"; 
}