How i can make Next and Previous post link from the same subcategory even if the post has multiple categories.
I do read all "wp Codex" like http://codex.wordpress.org/Function_Reference/next_post_link ...
and i do search a lot but there is no answer.
My site is http://wallpaperevo.com
Here is my categories build
I just want to navigate between all the posts from the same subcategory for example in "BMW Wallpapers".