ifbol{

        ".turn_bg".addcss"turn_bg_night";

        ".gkc_bg".addcss"gkc_bg_night";

        ".free_book_text".addcss"free_book_text_night";

        ".gkc_book_text".addcss"gkc_book_text_night";

        }else{

        ".turn_bg".removecss"turn_bg_night";

        ".gkc_bg".removecss"gkc_bg_night";

        ".free_book_text".removecss"free_book_text_night";

        ".gkc_book_text".removecss"gkc_book_text_night";

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