import os
import urllib
import urllib2
import cookielib

COOKIEFILE = 'cookies.lwp'
URL = 'http://pda.vkontakte.ru/index?fromlogin=1&'

txdata = urllib.urlencode({
	'email' : '',
	'pass' : '',
})

txheaders =  {
	'User-Agent'  : 'Mozilla/5.0 (X11; U; Linux i686; ru; rv:1.9.0.4) Gecko/2008112309 Iceweasel/3.0.4 (Debian-3.0.4-1)',
    'Accept' : 'text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5',
    'Accept-Language' : 'en-us,en;q=0.5',
    'Accept-Encoding' : 'gzip,deflate',
    'Accept-Charset' : 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
    'Keep-Alive' : '300',
    'Connection' : 'keep-alive',
    'Referer' : 'http://pda.vkontakte.ru/login?pda=index'
}

urlopen = urllib2.urlopen
Request = urllib2.Request
cj = cookielib.LWPCookieJar()

#if the file exists --> reading cookies
if os.path.isfile(COOKIEFILE):
	cj.load(COOKIEFILE)

opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
urllib2.install_opener(opener)

req = Request(URL, txdata, txheaders)
handle = urlopen(req)

#saving cookies
cj.save(COOKIEFILE)