function gray() { 
   document.getElementById("accueil").style.visibility="hidden";
  document.getElementById("accueil").style.display="none";
	document.getElementById("gray").style.visibility="visible";
   document.getElementById("gray").style.display="block";
   document.getElementById("eloye").style.visibility="hidden";
   document.getElementById("eloye").style.display="none";
   document.getElementById("brice").style.visibility="hidden";
  document.getElementById("brice").style.display="none";
  document.getElementById("tunisie").style.visibility="hidden";
  document.getElementById("tunisie").style.display="none";
  document.getElementById("chine").style.visibility="hidden";
  document.getElementById("chine").style.display="none";
}
function eloye() { 
   document.getElementById("accueil").style.visibility="hidden";
  document.getElementById("accueil").style.display="none";
   document.getElementById("gray").style.visibility="hidden";
   document.getElementById("gray").style.display="none";
   document.getElementById("eloye").style.visibility="visible";
   document.getElementById("eloye").style.display="block";
   document.getElementById("brice").style.visibility="hidden";
  document.getElementById("brice").style.display="none";
  document.getElementById("tunisie").style.visibility="hidden";
  document.getElementById("tunisie").style.display="none";
  document.getElementById("chine").style.visibility="hidden";
  document.getElementById("chine").style.display="none";
}
function brice() { 
   document.getElementById("accueil").style.visibility="hidden";
  document.getElementById("accueil").style.display="none";
   document.getElementById("gray").style.visibility="hidden";
   document.getElementById("gray").style.display="none";
   document.getElementById("eloye").style.visibility="hidden";
   document.getElementById("eloye").style.display="none";
   document.getElementById("brice").style.visibility="visible";
  document.getElementById("brice").style.display="block";
  document.getElementById("tunisie").style.visibility="hidden";
  document.getElementById("tunisie").style.display="none";
  document.getElementById("chine").style.visibility="hidden";
  document.getElementById("chine").style.display="none";
}
function tunisie() { 
   document.getElementById("accueil").style.visibility="hidden";
  document.getElementById("accueil").style.display="none";
   document.getElementById("gray").style.visibility="hidden";
   document.getElementById("gray").style.display="none";
   document.getElementById("eloye").style.visibility="hidden";
   document.getElementById("eloye").style.display="none";
   document.getElementById("brice").style.visibility="hidden";
  document.getElementById("brice").style.display="none";
  document.getElementById("tunisie").style.visibility="visible";
  document.getElementById("tunisie").style.display="block";
  document.getElementById("chine").style.visibility="hidden";
  document.getElementById("chine").style.display="none";
}
function chine() { 
   document.getElementById("accueil").style.visibility="hidden";
  document.getElementById("accueil").style.display="none";
   document.getElementById("gray").style.visibility="hidden";
   document.getElementById("gray").style.display="none";
   document.getElementById("eloye").style.visibility="hidden";
   document.getElementById("eloye").style.display="none";
   document.getElementById("brice").style.visibility="hidden";
  document.getElementById("brice").style.display="none";
  document.getElementById("tunisie").style.visibility="hidden";
  document.getElementById("tunisie").style.display="none";
  document.getElementById("chine").style.visibility="visible";
  document.getElementById("chine").style.display="block";
}