function formatCurrency(num,separateur,sigle) {
  var nsigle = '';
  if (sigle!='') { nsigle=' '+sigle; }
  num = num.toString().replace(/\$|\,/g,'');
  if(isNaN(num)) { num = "0"; }
  sign = (num == (num = Math.abs(num)));
  num = Math.floor(num*100+0.50000000001);
  cents = num%100;
  num = Math.floor(num/100).toString();
  if(cents<10) { cents = "0" + cents; }
  for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++) {
  	num = num.substring(0,num.length-(4*i+3))+separateur+num.substring(num.length-(4*i+3));
	}
  return (((sign)?'':'-') + num + '.' + cents + nsigle);
}


function lanceCalcul() {
				 
	var revenu = document.getElementById("revenu").value;
	var apport = document.getElementById("apport").value;
	var taux = document.getElementById("taux").value/100;
	var duree = document.getElementById("duree").value;
	//var mensualites = document.getElementById("mensualites").value;
	
	var mensualiteRbt = 0;
	var montantMax = 0;
	var ratioApport = 0;
	
	mensualiteRbt = revenu * 0.33;
	montantMax = mensualiteRbt*12*(1-Math.pow(1+taux,-duree))/taux;

	montantMax = Number(montantMax)+Number(apport);
	ratioApport = apport*100/montantMax;

	document.getElementById("montantmax").value=formatCurrency(montantMax,' ','€');
	document.getElementById("mensualiterbt").value=formatCurrency(mensualiteRbt,' ','€');
	document.getElementById("ratioapport").value=formatCurrency(ratioApport,'','%');
	
	montre_menu('simul1');
	montre_menu('simul2');
}