function ChangeOnglet_4(active, nombre, tab_prefix, contenu_prefix,tab_active) 
{   
    for (var i=1; i < nombre + 1; i++) 
    {
        document.getElementById(contenu_prefix + i).style.display = 'none';
        document.getElementById(tab_prefix + i).className = '';
    }  
    document.getElementById(tab_prefix+active).className = tab_active;
    document.getElementById(contenu_prefix+active).style.display = 'block';
       
}