$(document).ready(function() {
	// disable the button on page load
	$("#it_pin_button").attr("disabled", "disabled");
	
	$(document).keyup(function(){
		if ($('#it_pin_field').val().length == 8) {
			$("#it_pin_button").removeAttr("disabled");
		} else {
			$("#it_pin_button").attr("disabled", "disabled");
		}
	});
});