WebView "Event to fire more than once" fix (removeEventListener)

app.js

// Global Background Color
Ti.UI.setBackgroundColor("#000000");

// Namespace
var APP = {};

// Running
(function () {
    // Window
    var win = Ti.UI.createWindow({
        title: "WebView",
        backgroundColor: "#FFFFFF"
    });
    // WebView
    var webView = Ti.UI.createWebView(),
        attach = function (e) {
            APP.beforeURL = e.url + "";
            webView.removeEventListener("load", attach);
            alert("Loading");
        };
    webView.setUrl("http://www.google.com/");
    webView.addEventListener("load", attach);
    webView.addEventListener("beforeload", function (e) {
        var currentURL = e.url + "";
        if(currentURL !== APP.beforeURL) {
            webView.addEventListener("load", attach);
        }
    });
    win.add(webView);
    // TabGroup
    var tabGroup = Ti.UI.createTabGroup();
    tabGroup.addEventListener("focus", function (e) {
        APP.currentTab = e.tab;
    });
    // Tab
    var tab = Ti.UI.createTab({
        title: "WebView",
        icon: "KS_nav_views.png",
        window: win
    });
    tabGroup.addTab(tab);
    tabGroup.setActiveTab(tab);
    // Open
    tabGroup.open();
}());