function toggle(objet_id){
 document.getElementById("ingenieur").style.display = "none";
 document.getElementById("charge").style.display = "none";
 document.getElementById("dessinateur").style.display = "none";
 var obj=document.getElementById(objet_id);
 if(obj.style.display == 'block') {
  obj.style.display='none';
  }
  else
  {
  obj.style.display='block';
  }
} 


var list_div = new Array('procedes', 'etudes', 'installations', 'electricite', 'expertise', 'mise_en_route', 'preparation', 'management', 'qualification');

function displayDiv(id){
	for(var i=0; i<list_div.length; i++){
		var div = document.getElementById(list_div[i]);
		div.style.display = (div.id == id ? '' : 'none');
	}
}



 function masquer_div(id)
{
  if (document.getElementById(id).style.display == 'none')
  {
      document.getElementById(id).style.display = 'block';
  }
  
  
  else 
  {
    document.getElementById(id).style.display = 'none';   
  }
}