Log into Facebook with phantomJS

phantomjs_facebook.js

var page = require('webpage').create();

var fillLoginInfo = function(){
    var frm = document.getElementById("login_form");
    frm.elements["email"].value = 'your fb email/username';
    frm.elements["pass"].value = 'password';
    frm.submit();
}

page.onLoadFinished = function(){
    if(page.title == "歡迎來到 Facebook －登入、註冊或瞭解更多"){
        page.evaluate(fillLoginInfo);
        page.render('./screens/login.png');
        return;
    }
    else
        page.render('./screens/some.png');

    console.log("completed");
    phantom.exit();
}

page.open('https://www.facebook.com/');