Suggestion: google.searchTab('...');

[miredirex]

An ability to choose in what tab you do the search request. It should be an easy adjunction to the main URL.

for the 'All' tab it's empty. for the 'News' tab: &tbm=nws for the 'Videos' tab: &tbm=vid for the 'Shop' tab: &tbm=shop (though I don't think the links path is the same for this one, might not work)