Ul and ol can only have li elements as children. And what you're doing seems to be trying to insert one list inside another as a list item, so why not put that nested list inside a new list item (owned by the containing list, containing the nested list)?

(That's the way most people make those CSS drop-down hierarchical menus, too.)

In reply to Re^5: Directory Tree Structure by Anonymous Monk
in thread Directory Tree Structure by rupesh

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