Enters your postcode automatically at Telstra Service Status page

telstra.service.status.user.js

// ==UserScript==
// @name         Enter postcode at Telstra Site
// @namespace    http://your.homepage/
// @version      0.1
// @description  Enter your postcode automatically at Telstra Service Status page
// @author       Hiro Nozu
// @match        http://servicestatus.telstra.com/
// @grant        none
// ==/UserScript==

var myPostcode = '1234'; // Your postcode

function applyCustomABC() {
    var button = $('#blackhawk_search_location_button');
    var inputBox = $('#blackhawk_search_location_textfield');
    if (button.length) {
        inputBox.val(myPostcode).blur();
        setTimeout(function() { button.click(); }, 500);
    } else {
        setTimeout(applyCustomABC, 100);
    }
}
applyCustomABC();