add progress line to subtitle

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Flash

Please pay attention to this conception plan. In this plan for instance, each #n is a piece of text of subtitle. This concept can add status to classical status of subtitle in which a choice is delivered such as "progress bar" in media players. This choice in start to end of time interval, accompanies #n. But it is only to show timing progress of each #n and the interactive usage has not been regarded for it. This status can increase comfortable and alertness while reading the sub's by dragging and guiding your focus. The other case of this status, is demonstration of #n+1 and #n-1 while it has become pallid and subsidiary so having half a look at #n+1&#n-1. Generally these statuses cause you not to lose the text or vision therefore you would be as patient as possible. Anyway, please explain how can I perform this concept and therefore ask your question thanks