function codeTouche(evenement)
{
   for (prop in evenement)
   {
       if(prop == 'which') return(evenement.which);
   }
   return(evenement.keyCode);
}

function pressePapierNS6(evenement,touche)
{
   var rePressePapierNS = /[cvxz]/i;
   var isModifiers = false

   for (prop in evenement) if (prop == 'ctrlKey') isModifiers = true;
   if (isModifiers) return evenement.ctrlKey && rePressePapierNS.test(touche);
   else return false;
}

function scanTouche(evenement)
{
   var reCarSpeciaux = /[\x00\x08\x0D\x03\x16\x18\x1A]/;
   var reCarValides = /\d/;

   var codeDecimal  = codeTouche(evenement);
   var car = String.fromCharCode(codeDecimal);
   var autorisation = reCarValides.test(car) || reCarSpeciaux.test(car) || pressePapierNS6(evenement,car);

   return autorisation;
}

function scanChamp(objChamp)
{
   var reContenuValide = /^\d*$/; //Que des chiffres

   if (!reContenuValide.test(objChamp.value))
   {
       objChamp.value = '';
       objChamp.focus();
       alert('This field requires digits only.');
   }
}