// JavaScript Document

<!-- 

var state = 'hidden'; 

function showhide(layer_ref) { 

if (state == 'visible') { 
state = 'hidden'; 
} 
else { 
state = 'visible'; 
} 
if (document.all) {  
eval( "document.all." + layer_ref + ".style.visibility = state"); 
} 
if (document.layers) { 
document.layers[layer_ref].visibility = state; 
} 
if (document.getElementById && !document.all) { 
maxwell_smart = document.getElementById(layer_ref); 
maxwell_smart.style.visibility = state; 
} 
} 
//-->