add information for alt facs

modules/fontane/transform.xqm

@@ -1012,10 +1012,25 @@ declare function fontaneTransfo:facs($node) {
                     }
                 }
             else
-            element xhtml:img {
+            (element xhtml:img {
                 attribute class {('facs', string( ($node/@subtype)[1] ))},
                 attribute src {fontaneTransfo:digilib($node)}
-            }
+            },
+            if($node/tei:graphic[2])
+            then
+              for $graphic in $node/tei:graphic[position() gt 1]
+              let $tgUri :=  $graphic/substring-after(@url, "textgridrep.org/")
+              return
+                element xhtml:div {
+                  attribute class {'alt-facs'},
+                  element xhtml:a {
+                    attribute data-src {fontaneTransfo:digilib($node) => replace("textgrid:.[a-z0-9]{4,5}", $tgUri)},
+                    attribute data-href {"digilib/" || string($graphic/@n) || ".jpg?m2"},
+                    attribute href {"#"},
+                    text { "alternatives Abbild verfügbar" }
+                  }
+                }
+            else ())
         }
     }
 };