diff --git a/src/main/java/org/gcube/portlets/widgets/imagepreviewerwidget/client/ImagePreviewer.java b/src/main/java/org/gcube/portlets/widgets/imagepreviewerwidget/client/ImagePreviewer.java
index 9918e28..9be6ffd 100644
--- a/src/main/java/org/gcube/portlets/widgets/imagepreviewerwidget/client/ImagePreviewer.java
+++ b/src/main/java/org/gcube/portlets/widgets/imagepreviewerwidget/client/ImagePreviewer.java
@@ -21,7 +21,7 @@ public class ImagePreviewer implements EntryPoint {
 	public void onModuleLoad() {
 
 		// decomment for testing purpose
-				//test();
+		//test();
 
 	}
 
diff --git a/src/main/java/org/gcube/portlets/widgets/imagepreviewerwidget/client/ui/Carousel.java b/src/main/java/org/gcube/portlets/widgets/imagepreviewerwidget/client/ui/Carousel.java
index b5dde0e..79d21cb 100644
--- a/src/main/java/org/gcube/portlets/widgets/imagepreviewerwidget/client/ui/Carousel.java
+++ b/src/main/java/org/gcube/portlets/widgets/imagepreviewerwidget/client/ui/Carousel.java
@@ -134,6 +134,10 @@ public class Carousel extends Composite{
 	}
 
 	@UiHandler("downloadButton")
+	/**
+	 * When the user pushes this button, try to download the file.
+	 * @param e
+	 */
 	public void downloadOnClick(ClickEvent e){
 
 		String downloadUrl = listOfAttachmentsToShow.get(currentPreviewPosition).getDownloadUrl();
@@ -146,6 +150,10 @@ public class Carousel extends Composite{
 	}
 
 	@UiHandler("prevButton")
+	/**
+	 * Show the previous image, if any.
+	 * @param e
+	 */
 	public void onClickPrev(ClickEvent e){
 
 		// evaluate prev index
@@ -158,6 +166,10 @@ public class Carousel extends Composite{
 	}
 
 	@UiHandler("nextButton")
+	/**
+	 * Show the next image, if any.
+	 * @param e
+	 */
 	public void onClickNext(ClickEvent e){
 
 		// evaluate next index
@@ -171,7 +183,7 @@ public class Carousel extends Composite{
 	}
 
 	/**
-	 * Used to show this carousel.
+	 * Used to show this carousel (starting from the initial image).
 	 */
 	public void show(){
 
@@ -206,7 +218,7 @@ public class Carousel extends Composite{
 	}
 
 	/**
-	 * Retrieve the index of such image
+	 * Retrieve the index of such image.
 	 * @param image
 	 * @return -1 if no image matches
 	 */
@@ -224,7 +236,7 @@ public class Carousel extends Composite{
 	}
 
 	/**
-	 * Change the set of images to show
+	 * Change the set of images to show.
 	 * @param imagesToShow
 	 */
 	public void updateImages(List<EnhancedImage> imagesToShow){
@@ -234,7 +246,7 @@ public class Carousel extends Composite{
 	}
 
 	/**
-	 * Hide Previouse and Next arrows of the carousel.
+	 * Hide Previous and Next arrows of the carousel.
 	 */
 	public void hideArrows(){
 
@@ -244,7 +256,7 @@ public class Carousel extends Composite{
 	}
 
 	/**
-	 * Show image function
+	 * Show image function.
 	 * @param index the index of the image to show
 	 */
 	private void showImage(int index){