function calculerEconomieImpot()
{
	// DECLARATION DE VARIABLES
	var montantDon;
	var economieImpot;
	var coutReel;
	// RECUPERATION DU MONTANT DU DON
	montantDon = parseFloat(document.getElementById('Don').value);
	// TRAITEMENT
	if(!isNaN(montantDon))
	{
		// CALCULS
		economieImpot = montantDon * 0.66;
		coutReel = montantDon - economieImpot;
		// ARRONDIS
		economieImpot = economieImpot.toFixed(2);
		coutReel = coutReel.toFixed(2);
		// ECRITURE
		document.getElementById('EconomieImpot').value = economieImpot;
		document.getElementById('CoutReel').value = coutReel;
	}
	else
	{
		// ECRITURE
		document.getElementById('EconomieImpot').value = '';
		document.getElementById('CoutReel').value = '';
	}
}