utlime

TextMask.maskInput({
    inputElement: document.querySelector("input[name = cadastral_number]"),
    mask: function(rawValue) {
        var mask = [/\d/, /\d/, ":", /\d/, /\d/, ":"];
        var chunks = rawValue.replace(/\_/g, "").split(":");
        var i;

        for (i = 0; (!chunks[2] || i < chunks[2].length) && i < 7; i++) {
            mask.push(/\d/);
        }