// JavaScript Document

function getElement(id) { 
return document.all ? document.all(id) : 
document.getElementById ? document.getElementById(id) : 
document.layers ? document.layers[id] : null; 
} 

function vislayeron(id) { 
var el = getElement(id); 
if (!el) return; 
if (el.style) el.style.visibility = 'visible'; 
else if (el.visibility) el.visibility = 'show'; 
} 

function vislayeroff(id) { 
var el = getElement(id); 
if (!el) return; 
if (el.style) el.style.visibility = 'hidden'; 
else if (el.visibility) el.visibility = 'hide'; 
}