diff --git a/src/main/java/org/gcube/portlets/user/reportgenerator/client/dialog/LoadingPopup.java b/src/main/java/org/gcube/portlets/user/reportgenerator/client/dialog/LoadingPopup.java
deleted file mode 100644
index c1a0fa2..0000000
--- a/src/main/java/org/gcube/portlets/user/reportgenerator/client/dialog/LoadingPopup.java
+++ /dev/null
@@ -1,45 +0,0 @@
-package org.gcube.portlets.user.reportgenerator.client.dialog;
-
-import com.google.gwt.core.client.GWT;
-import com.google.gwt.event.dom.client.ClickEvent;
-import com.google.gwt.event.dom.client.ClickHandler;
-import com.google.gwt.user.client.ui.ClickListener;
-import com.google.gwt.user.client.ui.DialogBox;
-import com.google.gwt.user.client.ui.HTML;
-import com.google.gwt.user.client.ui.Widget;
-
-
-/**
- * @author massimiliano.assante@isti.cnr.it
- *
- */
-public class LoadingPopup extends DialogBox implements ClickHandler {
-
-	/**
-	 * @param autoHide auto hide
-	 */
-	public LoadingPopup(boolean autoHide) {
-		super(false);
-		HTML msg = new HTML(setToDisplay(), true);
-		setWidget(msg);
-	}
-
-
-	/**
-	 * @return inner html
-	 */
-	protected static String setToDisplay() {
-		return 
-		"<center><table border=\"0\">"+
-		"<tr>"+
-		"<td>"+
-		"<img src=\""+GWT.getModuleBaseURL()+"../images/book_load.gif\" >"+
-		"</td></tr>"+
-		"</table></center>" ;
-	}
-
-	public void onClick(ClickEvent event) {
-		 hide(); 
-		
-	}
-}
\ No newline at end of file
diff --git a/src/main/java/org/gcube/portlets/user/reportgenerator/client/dialog/WaitingOperationDialog.java b/src/main/java/org/gcube/portlets/user/reportgenerator/client/dialog/WaitingOperationDialog.java
index 1e4b23a..9320164 100644
--- a/src/main/java/org/gcube/portlets/user/reportgenerator/client/dialog/WaitingOperationDialog.java
+++ b/src/main/java/org/gcube/portlets/user/reportgenerator/client/dialog/WaitingOperationDialog.java
@@ -8,7 +8,6 @@ public class WaitingOperationDialog extends GCubeDialog {
 	public WaitingOperationDialog() {
 		super(true, false);
 		setText("Please wait ...");
-		setStyleName("loading_DialogBox");
 		setWidth("200px");
 		setWidget(new ShowSaving());
 	}
diff --git a/src/main/webapp/ReportGenerator.css b/src/main/webapp/ReportGenerator.css
index 72dbea8..160421b 100644
--- a/src/main/webapp/ReportGenerator.css
+++ b/src/main/webapp/ReportGenerator.css
@@ -822,52 +822,3 @@ gwt-MenuBar {
 	border-spacing: 0px;
 }
 
-/** dialog box **/
-.loading_DialogBox {
-	z-index: 10001;
-	background: #FFFFFF none repeat-x scroll 0 0;
-	border: 11px solid rgb(60, 60, 60); /* for not understanding rgba prop browsers*/
-	border: 11px solid rgba(0, 0, 0, 0.50);
-	-webkit-background-clip: padding-box; /* for Safari */
-    background-clip: padding-box; /* for IE9+, Firefox 4+, Opera, Chrome */
-	border-radius: 6px;
-	-moz-border-radius: 6px;
-	-webkit-border-radius: 6px;
-}
-
-.loading_DialogBox .dialogTop {
-	background: #2999c9;
-	margin: 0px;
-	padding-left: 5px;
-	height: 20px;
-}
-
-.loading_DialogBox .dialogMiddleCenter {
-	padding: 5px;
-}
-
-.loading_DialogBox .dialogMiddleLeft {
-	background: #FFF;
-	padding-left: 5px;
-}
-
-.loading_DialogBox .dialogMiddleRight {
-	background: #FFF;
-	padding-right: 5px;
-}
-
-.loading_DialogBox .dialogBottom {
-	background: #FFF;
-	margin: 0px;
-	padding-left: 5px;
-	height: 5px;
-}
-
-.loading_DialogBox .Caption {
-	font-family: 'lucida grande', tahoma, verdana, arial, sans-serif;
-	font-size: 14px;
-	font-weight: bold;
-	color: #FFF;
-	padding: 5px;
-	
-}
\ No newline at end of file