Fixing disappearing pages (when multiple are visible)

web/viewer.js

@@ -16,6 +16,9 @@ var kMaxScale = 4.0;
 var Cache = function cacheCache(size) {
   var data = [];
   this.push = function cachePush(view) {
+    var i = data.indexOf(view);
+    if (i >= 0)
+      data.splice(i);
     data.push(view);
     if (data.length > size)
       data.shift().update();
@@ -277,7 +280,6 @@ var PDFView = {
                           view: singlePage });
       currentHeight += singlePage.height * singlePage.scale + kBottomMargin;
     }
-
     return visiblePages;
   }
 };