$base_url = 'http://www.google.com/'
$about_url = $base_url + '/intl/en/about.html'
You should really try this yourself before asking here:
C:\Documents and Settings\cmcmahon>irb
irb(main):001:0> $base_url = "http://www.google.com "
=> "http://www.google.com"
irb(main):002:0> $about_url = "/intl/en/about.html"
=> "/intl/en/about.html"
irb(main):003:0> full_url = $base_url + $about_url
=> "http://www.google.com/intl/en/about.html"
irb(main):004:0>
also, those global variables are going to cause you trouble sooner or later.
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