show and hide a block by ulr hash? [done]

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I need a trick to have two versions of a page in on…

I have a page with two page-list-blocks with different settings (and some other blocks…).
These two lists can be hard coded.

how can I hide the second list when I come on the normal navigation
and show when i come from an other link and hide the first list…

my idea i to add an hash #hide_me when I come from the "other link"…

[done… I found an other way]