elements = (
            # pure html processing
            ('title', '/html/body/div/table/tbody/tr[5]/td/table/tbody/tr/td[3]/table/tbody/tr/td/form/table/tbody/tr/td/span'.replace('tbody','').replace('//','/'), 'a span div p table td'),
            ('img_url', "/html/body/div/table[@class='text']/tbody/tr[5]/td/table[@class='text']/tbody/tr[1]/td[3]/table[@class='text']/tbody/tr/td/form/table[@class='text']/tbody/tr[2]/td/table[@class='text']/tbody/tr[3]/td[1]/table[@class='text']/tbody/tr[1]/td/a/img[@class='border-orange']/@src".replace('tbody','').replace('//','/'), ''),
            ('description', "/html/body/div/table[@class='text']/tbody/tr[5]/td/table[@class='text']/tbody/tr[1]/td[3]/table[@class='text']/tbody/tr/td/form/table[@class='text']/tbody/tr[4]/td/table[@class='text' and position()=1]/tbody/tr[2]/td[@class='line-bottom-grey']".replace('tbody','').replace('//','/'), 'a span div p table td tr li ul ol strong img input'),
            ('location', "/html/body/div/table[@class='text']/tbody/tr[5]/td/table[@class='text']/tbody/tr[1]/td[3]/table[@class='text']/tbody/tr/td/form/table[@class='text']/tbody/tr[2]/td/table[@class='text']/tbody/tr[3]/td[@class='border-gray' and position()=2]/table[@class='text']/tbody/tr[3]/td[@class='line-bottom-grey' and position()=2]/span[@class='data']".replace('tbody','').replace('//','/'), 'a span div p table td'),

            # site-specified
            ('table_info', "/html/body/div/table[@class='text']/tbody/tr[5]/td/table[@class='text']/tbody/tr[1]/td[3]/table[@class='text']/tbody/tr/td/form/table[@class='text']/tbody/tr[2]/td/table[@class='text']/tbody/tr[3]/td[@class='border-gray' and position()=2]/table[@class='text']".replace('tbody','').replace('//','/'), 'a span div p table img td tr strong'),

            # additional processing with regexp
            ('operation', ( "/html/body/div/table[@class='text']/tbody/tr[5]/td/table[@class='text']/tbody/tr[1]/td[3]/table[@class='text']/tbody/tr/td/form/table[@class='text']/tbody/tr[2]/td/table[@class='text']/tbody/tr[3]/td[@class='border-gray' and position()=2]/table[@class='text']/tbody/tr[2]/td[@class='line-bottom-grey' and position()=2]/span[@class='data']".replace('tbody','').replace('//','/'), 'Sale|Rent' ), '' ),
            ('type', ( "/html/body/div/table[@class='text']/tbody/tr[5]/td/table[@class='text']/tbody/tr[1]/td[3]/table[@class='text']/tbody/tr/td/form/table[@class='text']/tbody/tr[2]/td/table[@class='text']/tbody/tr[3]/td[@class='border-gray' and position()=2]/table[@class='text']/tbody/tr[2]/td[@class='line-bottom-grey' and position()=2]/span[@class='data']".replace('tbody','').replace('//','/'), 'House|Condo|Land|Commercial Space|Bars & Restaurants|Guesthouses/Hotels' ), ''),
            ('price', ( "/html/body/div/table[@class='text']/tbody/tr[5]/td/table[@class='text']/tbody/tr[1]/td[3]/table[@class='text']/tbody/tr/td/form/table[@class='text']/tbody/tr[3]/td/table[@class='border-orange']/tbody/tr".replace('tbody','').replace('//','/'), '[0-9, ]+THB*' ), '')
    )

    parsed_url_regexp = 'PropertyID=[0-9]+' # PropertyID=0000003333

    re_urls = 'p=property_details'

    rules = (
        Rule( SgmlLinkExtractor(allow=('',), deny=(re_urls)), follow=True ), # follow links found on any page
        Rule( SgmlLinkExtractor(allow=(re_urls,)), callback='parse_item' ), # extract data from link which URL contains 'p=property_details'
    )