Make 'zoom' independent from 'page' in the hash parameters

web/viewer.js

@@ -1129,8 +1129,10 @@ var PDFView = {
         PDFView.navigateTo(params.nameddest);
         return;
       }
+      var pageNumber, dest;
       if ('page' in params) {
-        var pageNumber = (params.page | 0) || 1;
+        pageNumber = (params.page | 0) || 1;
+      }
       if ('zoom' in params) {
         var zoomArgs = params.zoom.split(','); // scale,left,top
         // building destination array
@@ -1139,19 +1141,20 @@ var PDFView = {
         // it should stay as it is.
         var zoomArg = zoomArgs[0];
         var zoomArgNumber = parseFloat(zoomArg);
-          if (zoomArgNumber)
+        if (zoomArgNumber) {
           zoomArg = zoomArgNumber / 100;
-
-          var dest = [null, {name: 'XYZ'},
+        }
+        dest = [null, {name: 'XYZ'},
                 zoomArgs.length > 1 ? (zoomArgs[1] | 0) : null,
                 zoomArgs.length > 2 ? (zoomArgs[2] | 0) : null,
                 zoomArg];
-          var currentPage = this.pages[pageNumber - 1];
+      }
+      if (dest) {
+        var currentPage = this.pages[(pageNumber || this.page) - 1];
         currentPage.scrollIntoView(dest);
-        } else {
+      } else if (pageNumber) {
         this.page = pageNumber; // simple page
       }
-      }
       if ('pagemode' in params) {
         var toggle = document.getElementById('sidebarToggle');
         if (params.pagemode === 'thumbs' || params.pagemode === 'bookmarks') {