Python を使用して Selenium で JavaScript スニペットを実行するにはどうすればよいですか?

<code class="python">from selenium import webdriver
import selenium
from selenium.common.exceptions import NoSuchElementException
from selenium.webdriver.common.keys import Keys
import time

patch = raw_input("Enter patch number\n")
rel = raw_input("Enter release\n")
plat = raw_input("Enter port\n")

browser = webdriver.Firefox()

browser.get("xxxxxxxxxxxxxxxxx")

pdtfamily = browser.find_element_by_id("prodFamilyID")
pdtfamily.send_keys("Database &amp; Tools" + Keys.TAB)
time.sleep(5)

pdt = browser.find_element_by_id("productID")
pdt.send_keys("Intelligent Agent" + Keys.TAB)
time.sleep(5)

pdt1 = browser.find_element_by_id("patchCacheChkBxID")
pdt1.send_keys(Keys.SPACE)
time.sleep(5)

pdt7 =  browser.find_element_by_id("M__Idf")
pdt7.send_keys(plat)

pdt8 =  browser.find_element_by_id("M__Idg")
pdt8.send_keys("American English")

# Execute JavaScript snippet using browser.execute_script
browser.execute_script("submitForm('patchCacheAdd',1,{'event':'ok'});return false")

browser.close()</code>