html - How to keep the state of a css based navigation menu while navigating to other pages -

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i new css , trying find out how keep state of css based menu on multiple pages.

the situation working on intranet site. there set structure of website. have content files , left menu file. left menu file used creating links other pages , imported in content files. (these asp files , not sure call technically using content of 1 file in other files).

so task have site map , want translate links in left menu file appear in content pages.

i using this example , adjusted needs. problem when go 1 page other state of expanded , collapsed nodes not stay same. best way achieve this.


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