<script language="JavaScript">
	function formatar(src, mask) {
		var i = src.value.length;
		var saida = mask.substring(i,i+1);
		var ascii = event.keyCode;
		if (saida == "A") {
			if ((ascii >=97) && (ascii <= 122)) { event.keyCode -= 32; }
			else { event.keyCode = 0; }
		} else if (saida == "0") {
			if ((ascii >= 48) && (ascii <= 57)) { return }
			else { event.keyCode = 0 }
		} else if (saida == "#") {
			return;
		} else {
			src.value += saida;
			i += 1
			saida = mask.substring(i,i+1);
			if (saida == "A") {
				if ((ascii >=97) && (ascii <= 122)) { event.keyCode -= 32; }
				else { event.keyCode = 0; }
			} else if (saida == "0") {
				if ((ascii >= 48) && (ascii <= 57)) { return }
				else { event.keyCode = 0 }
			} else { return; }
		}
	}
</script>
