[tsigel]

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script>
    $(function(){
		$('.number_dots').on("keyup", 'input', function(){
			this.value = this.value.replace(/^\0|[^\d]/g, '');
		});
	});
</script>