fix next and previous image bug

WebGde/WebContent/WebGde-Widgets/ImageViewerWidget/modules/imageViewer/imageViewer.js

@@ -126,7 +126,7 @@ export class ImageViewer {
 
         //reset the page displayed, display the first page 
         if (object !== null && object instanceof PDFDocument) {
-            object.canvas.id = this.currentImageID;
+            //object.canvas.id = this.currentImageID;
             this.currentImageObject.queueRenderPage(1);
         }