check whois changed or not

require 'watir'

domain=%w[<>]
i=0
a=[]
b=[]
browser = Watir::IE.start "http://www.port43whois.com/index.php"
until i==domain.length
browser.text_field(:name, "query").set(domain[i])
browser.button(:value,"Whois").click
if browser.text.include? ()
a<
else
b<
end
i+=1
end
puts "Whois changed"
puts a
puts ""
puts ""
puts "Whois not changed"
puts b