Dropdown Apple Script

set listWithLinks to {"google.com", "bing.com", "yahoo.com"}
set listWithLabels to {"Google", "Bing", "Yahoo"}
set dialogTitle to "Select & Go to open link"
set buttonOK to "Go"
set buttonCancel to "Cancel"
set choosedLabels to choose from list (listWithLabels as list) with title dialogTitle OK button name buttonOK cancel button name buttonCancel with multiple selections allowed
if false is choosedLabels then return
repeat with i from 1 to number of items in choosedLabels
    set choosedLabel to item i of choosedLabels
    repeat with i from 1 to number of items in listWithLabels
        set lookupLabel to item i of listWithLabels
        if choosedLabel is lookupLabel then
            set link to item i of listWithLinks
            open location "http://www." & link
        end if
    end repeat
end repeat