var imgs_str = new Array(
                                    'employe_retraite_on.gif',
                                    'individuel_famille_on.gif',   
                                     'scolaire_enseignement_on.gif'     ,
                                    'groupe_association_on.gif',   
                                    'seminaire_on.gif'  
                                   
                                    );
                                    
var imgs =  new Array();
for(var i=0;i<imgs_str.length;i++)
{
    imgs[i] = new Image();
    imgs[i].src = '/images/nav_home/'+imgs_str[i];
}


function navigate_on(place,offset){


var ligne = "ln_"+place;    
var img = "img_"+place;


document.getElementById(img).src = imgs[offset].src;
document.getElementById(ligne).style.textDecoration = "underline";
 
}

function navigate_off(place){

var ligne = "ln_"+place;    
var img = "img_"+place;


switch(place){
    case "employes_retraite_michelin":
    var old_file = "/images/nav_home/employe_retraite_off.gif";
    break;
    
    case "individuels_et_familles":
    var old_file = "/images/nav_home/individuel_famille_off.gif";  
    break;
    
    case "scolaires_et_enseignants":
    var old_file = "/images/nav_home/scolaire_enseignement_off.gif";  
    break;
    
    case "groupes_et_associations":
    var old_file = "/images/nav_home/groupe_association_off.gif";  
    break;
    
    case "seminaires_et_incentives":
    var old_file = "images/nav_home/seminaire_off.gif";  
    break;
}
 
document.getElementById(img).src = old_file;
document.getElementById(ligne).style.textDecoration = "none";
      
}