Try reading the Wiki page more carefully next time:
Quote:
mixed - If the user goes to http:// it will redirect to https:// for the login only, then will revert to http:// for normal session traffic. If they browse to https:// then they will stay https:// redirect - like mixed, if the user goes to http:// it will redirect to https:// but they will stay https:// for their entire session.
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Hope that solves your issue.
Edit: I should take my own advice

Note that the redirect command is only available in zcs 5+ so this will not work if your server is still using a 4.5.x build