function show(item, val){ 
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	{
		document.getElementById("viz"+v).style.display = "none";
	}
	
  if (document.getElementById(item).style.display == "none"){ 
	  document.getElementById(item).style.display = "block";
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	else{ 
	  document.getElementById(item).style.display = "none";
	} 
	
}

function mail(Nom){
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}