var what = null;
var newbrowser = true;
var check = false;

function init() { 
 if (document.layers) { 
 layerRef="document.layers"; 
 styleSwitch=""; 
 visibleVar="show"; 
 screenSize = window.innerWidth; 
 what ="ns4"; 
 } 
 else if(document.all) { 
 layerRef="document.all"; 
 styleSwitch=".style"; 
 visibleVar="visible"; 
 screenSize = document.body.clientWidth + 18; 
 what ="ie4"; 
 } 
 else if(document.getElementById) { 
 layerRef="document.getElementByID"; 
 styleSwitch=".style"; 
 visibleVar="visible"; 
 what="dom1"; 
 } 
 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 hideAll() { 
 hideLayer('company'); 
 hideLayer('products'); 
 hideLayer('vide'); 
 hideLayer('job'); 
 hideLayer('joindre'); 
 hideLayer('services'); 


 //Put all layers used in the nav here. 
 //Copy the hideLayer() function above. 
 }