function codeTouche(evenement) {
	        for (prop in evenement)
	        {
	                if(prop == 'which') return(evenement.which);
	        }
	        return(evenement.keyCode);
}
function scanTouche(evenement,exp) {			
	var reCarSpeciaux = /[\x00\x08\x0D]/;
	if (exp=='num') var reCarValides=/[0-9\/]/; else var reCarValides = /[^"']/;
	var codeDecimal  = codeTouche(evenement);
	var car = String.fromCharCode(codeDecimal);
	var autorisation = reCarValides.test(car)|| reCarSpeciaux.test(car);
	return autorisation;
}