var badgeSlide ;

window.addEvent('keypress',function(e) { if(e.key == 'esc') { hideBadge(); } });

function showBadge(){
  document.getElementById('badge_slide').style.display = "block" ;
}

function hideBadge(){
  document.getElementById('badge_slide').style.display = "none" ;
}

function incrementer() {
	var nbre = parseInt($('quantity').value)+1;
	$('quantity').value = nbre;
	$('prixProd').innerHTML = (nbre*6);
	$('prixTotal').innerHTML = (nbre*6)+6;
}

function decrementer() {
	var nbre = parseInt($('quantity').value)-1;
	if (nbre<1) {
		nbre = 1;
	}
	$('quantity').value = nbre;
	$('prixProd').innerHTML = (nbre*6);
	$('prixTotal').innerHTML = (nbre*6)+6;
}

function modifier() {
	var nbre = parseInt($('quantity').value);
	if (nbre<1) {
		nbre = 1;
	}
	$('quantity').value = nbre;
	$('prixProd').innerHTML = (nbre*6);
	$('prixTotal').innerHTML = (nbre*6)+6;
}