function init()
	{
		document.getElementById('choix').style.display='block';
		document.getElementById('contrat').style.display='block';
		document.getElementById('consommation').style.display='block';
		document.getElementById('consommationBase').style.display='block';
		document.getElementById('consommationCreux').style.display='none';
		document.getElementById('facture').style.display='none';
	}
	
	function connais()
	{
		document.getElementById('contrat').style.display='block';
		document.getElementById('facture').style.display='none';
		document.getElementById('consommation').style.display='block';
		document.getElementById('consommationBase').style.display='block';
	}
	
	function connaisPas()
	{
		document.getElementById('facture').style.display='block';
		document.getElementById('contrat').style.display='block';
		document.getElementById('consommation').style.display='none';
	}
	
	function base()
	{
		document.getElementById('consommationBase').style.display='block';
		document.getElementById('consommationCreux').style.display='none';
	}
	
	function creux()
	{
		document.getElementById('consommationBase').style.display='none';
		document.getElementById('consommationCreux').style.display='block';
	}