play/pause youtube via applescript

play_pause_youtube

tell application "Google Chrome"
	set found_video to false
	set window_list to every window
	repeat with the_window in window_list
		if found_video is equal to true then
			exit repeat
		end if
		set tab_list to every tab in the_window
		repeat with the_tab in tab_list
			if the title of the_tab contains "- YouTube" then
				tell the_tab
					execute javascript "document.querySelector(\"video\").click();"
				end tell
				set found_video to true
				exit repeat
			end if
		end repeat
	end repeat
end tell