I've been trying for about a week to figure out a drop down menu using selenium 2. It's a project I am working on to automate a flight search using ITA Matrix 2 (http://matrix.itasoftware.com/). Everything works OK except selecting the number of passengers from the drop down menu. Clicking on it works fine, but attempts to send keys or arrow commands to both it, and the new ID which is created when it pops up, don't result in any actions. I appreciate any help! (I am very new to python, I'm doing this project as a sort of self teaching exercise to learn).
from selenium import webdriver
from time import sleep
import time
driver = webdriver.Firefox()
driver.get("http://matrix.itasoftware.com/")
driver.find_element_by_id("advancedfrom1").send_keys(lport) #starting airport
driver.find_element_by_id("advancedto1").send_keys(rport) #destination airport
driver.find_element_by_id("advanced_rtDeparture").send_keys(ldate) #leaving date
driver.find_element_by_id("advanced_rtReturn").send_keys(rdate) #return date
driver.find_element_by_id("ita_form_location_RouteLanguageTextBox_0").send_keys(lflight) #going flight number
driver.find_element_by_id("ita_form_location_RouteLanguageTextBox_1").send_keys(rflight) #return flight number
#problem code:
driver.find_element_by_id("ita_form_pax_Passenger_0").click()#.send_keys("2")
time.sleep(2) #allow drop down to pop up
from selenium.webdriver.common.keys import Keys
driver.find_element_by_id("dijit_MenuItem_4_text").send_keys(Keys.DOWN) #tried to scroll down
driver.find_element_by_id("ita_form_pax_Passenger_0").send_keys(Keys.DOWN)
#also tried just sending the number directly:
driver.find_element_by_id("dijit_MenuItem_4_text").send_keys(numpax)
driver.find_element_by_id("ita_form_pax_Passenger_0").send_keys(numpax)