erc-links.el

(defun erc-next-link (arg)
      "Move point to the ARGth URL, or the end of the buffer if none."
      (interactive "p")
      (or (re-search-forward erc-button-url-regexp (point-max) t arg)
          (goto-char (point-max))))

    (defun erc-previous-link (arg)
      "Move point to the ARGth most recent URL."
      (interactive "p")
      (when (looking-at erc-button-url-regexp)
        (re-search-backward "\\\s"))
      (re-search-backward erc-button-url-regexp 0 t))

    (define-key erc-mode-map "\C-cp" 'erc-previous-link)
    (define-key erc-mode-map "\C-cn" 'erc-next-link)