function affichage(x, selObj){

//selObj.selectedIndex=0;
document.getElementById('papetieres').style.display='none'
document.getElementById('alumineries').style.display='none'
document.getElementById('scieries').style.display='none'
document.getElementById('aeronautiques').style.display='none'
document.getElementById('manufacturier').style.display='none'

document.getElementById(x).style.display='block'
if (navigator.platform!="MacPPC"){
window.location.href="#menu1"
}
}