
<!-- detect browser 
NS4 = (document.layers) ? 1 : 0; 
IE4 = (document.all) ? 1 : 0; 
// W3C stands for the W3C standard 
W3C = (document.getElementById) ? 1 : 0; 

function makeVisible ( name ) { 
var ele; 

if ( W3C ) { 
ele = document.getElementById(name); 
} else if ( NS4 ) { 
ele = document.layers[name]; 
} else { // IE4 
ele = document.all[name]; 
} 

if ( NS4 ) { 
ele.visibility = "show"; 
} else { // IE4 & W3C & Mozilla 
ele.style.visibility = "visible"; 
ele.style.display = "inline";
} 
} 

function makeInvisible ( name ) { 
if (W3C) { 
document.getElementById(name).style.visibility = "hidden"; 
document.getElementById(name).style.display = "none"; 
} else if (NS4) { 
document.layers[name].visibility = "hide"; 
} else { 
document.all[name].style.visibility = "hidden"; 
document.all[name].style.style.display = "none"; 
} 
} 

-->