Add Up/Home link to the top of the HTML doc output.

Backpatch to 9.0.X and 9.1.X.

diff --git a/doc/src/sgml/stylesheet.dsl b/doc/src/sgml/stylesheet.dsl
index 637758ff429eb7d3c7022faed48465a18cc124f3..2c18dabf698194437e2ed1725f4a6354cdf8df49 100644 (file)
--- a/doc/src/sgml/stylesheet.dsl
+++ b/doc/src/sgml/stylesheet.dsl
@@ -284,7 +284,7 @@
 
 ;; Customization of header, add title attributes (overrides
 ;; dbcommon.dsl)
-(define (default-header-nav-tbl-ff elemnode prev next prevsib nextsib)
+(define (default-header-nav-tbl-ff elemnode prev next)
   (let* ((r1? (nav-banner? elemnode))
         (r1-sosofo (make element gi: "TR"
                          (make element gi: "TH"
@@ -298,8 +298,6 @@
                                      (nav-banner elemnode)))))
         (r2? (or (not (node-list-empty? prev))
                  (not (node-list-empty? next))
-                 (not (node-list-empty? prevsib))
-                 (not (node-list-empty? nextsib))
                  (nav-context? elemnode)))
         (r2-sosofo (make element gi: "TR"
                          (make element gi: "TD"
@@ -323,15 +321,9 @@
                                             (list "WIDTH" "10%")
                                             (list "ALIGN" "left")
                                             (list "VALIGN" "top"))
-                               (if (node-list-empty? prevsib)
-                                   (make entity-ref name: "nbsp")
-                                   (make element gi: "A"
-                                         attributes: (list
-                                                      (list "TITLE" (element-title-string prevsib))
-                                                      (list "HREF"
-                                                            (href-to
-                                                             prevsib)))
-                                         (gentext-nav-prev-sibling prevsib))))
+                               (if (nav-up? elemnode)
+                                   (nav-up elemnode)
+                                   (nav-home-link elemnode)))
                          (make element gi: "TD"
                                attributes: (list
                                             (list "WIDTH" "60%")
@@ -340,21 +332,7 @@
                                (nav-context elemnode))
                          (make element gi: "TD"
                                attributes: (list
-                                            (list "WIDTH" "10%")
-                                            (list "ALIGN" "right")
-                                            (list "VALIGN" "top"))
-                               (if (node-list-empty? nextsib)
-                                   (make entity-ref name: "nbsp")
-                                   (make element gi: "A"
-                                         attributes: (list
-                                                      (list "TITLE" (element-title-string nextsib))
-                                                      (list "HREF"
-                                                            (href-to
-                                                             nextsib)))
-                                         (gentext-nav-next-sibling nextsib))))
-                         (make element gi: "TD"
-                               attributes: (list
-                                            (list "WIDTH" "10%")
+                                            (list "WIDTH" "20%")
                                             (list "ALIGN" "right")
                                             (list "VALIGN" "top"))
                                (if (node-list-empty? next)