function updateQtyTbx(nrProd,isUp)
{
	var toAdd = (isUp==1?isUp:-1);
	var newQty = Number(document.getElementById('qtty'+nrProd).value)+toAdd;
	newQty = (newQty < 0 ? 0 : (newQty > 100 ? 100 : newQty));
	document.getElementById('qtty'+nrProd).value = newQty;
}

function submitformPanier()
{
	document.getElementById('form_panier').submit();
}