使用硒和python发布到Facebook墙

我正在windows 7上使用firefox 18.0和selenium webdriver与python（2.7）绑定。使用所有这一切，我已经能够登录到Facebook，转到用户的页面，发送文本到墙上的字段。但是当我让它点击发布，它不发布。我已经观察到，当我把钥匙发送到墙上的字段时，文本显示为褪色，但是当我手动输入字段时，文本看起来很暗。这可能是问题。我开始这样做，看是否可以完成...没有真正的目的..但现在它不起作用，它驱使我疯狂。任何想法？

I am using firefox 18.0 and selenium webdriver with python(2.7) bindings on windows 7. Using all this I have been able to log in to facebook, go to an user's page , send text to the wall post field. but when i make it click post, it doesn't post. I have observed that when I send the keys to the wall post field, the text appears faded, but when i manually type into the field, the text appears dark. This might be the problem. I started doing this to see if it could be done...for no real purpose.. but now that it doesn't work, its driving me crazy. Any ideas?

    driver = self.driver
    driver.get("https://www.facebook.com/")
    driver.find_element_by_id("email").clear()
    driver.find_element_by_id("email").send_keys("mailid@email.com")
    driver.find_element_by_id("pass").clear()
    driver.find_element_by_id("pass").send_keys("password")
    driver.find_element_by_id("u_0_4").click()

    #i wanted to post multiple times.. but it doesn't work even once
    for i in range(1,11):
        driver.get("https://www.facebook.com/<username>")
        el=driver.find_element_by_id("u_0_1r")#post field
        el.clear()
        print i
        el.click()
        el.clear()
        el.send_keys(Keys.RETURN)
        time.sleep(1)
        el.click()
        #assume fwords is a list of words
        el.send_keys('test output: '+random.choice(fwords))
        el.click()
        el.click()
        time.sleep(2)
        driver.find_element_by_id("u_0_1m").click()
        driver.find_element_by_xpath("//form[@id='u_0_1l']/div/div[4]/div/ul/li[2]/label/input").click()
        time.sleep(8)