diff --git a/src/main/java/org/gcube/portlets/widgets/dataminermanagerwidget/client/DataMinerManagerController.java b/src/main/java/org/gcube/portlets/widgets/dataminermanagerwidget/client/DataMinerManagerController.java
index 0fc8f59..76fee07 100644
--- a/src/main/java/org/gcube/portlets/widgets/dataminermanagerwidget/client/DataMinerManagerController.java
+++ b/src/main/java/org/gcube/portlets/widgets/dataminermanagerwidget/client/DataMinerManagerController.java
@@ -14,7 +14,7 @@ import org.gcube.portlets.widgets.dataminermanagerwidget.client.events.Computati
 import org.gcube.portlets.widgets.dataminermanagerwidget.client.events.DataMinerWorkAreaEvent;
 import org.gcube.portlets.widgets.dataminermanagerwidget.client.events.DataMinerWorkAreaRequestEvent;
 import org.gcube.portlets.widgets.dataminermanagerwidget.client.events.DeleteItemRequestEvent;
-import org.gcube.portlets.widgets.dataminermanagerwidget.client.events.ExternalExecutionEvent;
+import org.gcube.portlets.widgets.dataminermanagerwidget.client.events.ExternalExecutionRequestEvent;
 import org.gcube.portlets.widgets.dataminermanagerwidget.client.events.MenuEvent;
 import org.gcube.portlets.widgets.dataminermanagerwidget.client.events.MenuSwitchEvent;
 import org.gcube.portlets.widgets.dataminermanagerwidget.client.events.OperatorsClassificationEvent;
@@ -141,9 +141,9 @@ public class DataMinerManagerController {
 							@Override
 							public void onStart(
 									StartComputationExecutionRequestEvent event) {
-								Log.debug("Catch StartComputationExecutionRequestEvent: "
+								Log.debug("Catch StartComputationExecutionRequestEvent In Controller: "
 										+ event);
-								ExternalExecutionEvent ev=new ExternalExecutionEvent(event.getOp());
+								ExternalExecutionRequestEvent ev=new ExternalExecutionRequestEvent(event.getOp());
 								EventBusProvider.INSTANCE.fireEvent(ev);
 								//startComputationRequest(event);
 
diff --git a/src/main/java/org/gcube/portlets/widgets/dataminermanagerwidget/client/resources/DataMiner.css b/src/main/java/org/gcube/portlets/widgets/dataminermanagerwidget/client/resources/DataMiner.css
index adf0c77..77530c9 100644
--- a/src/main/java/org/gcube/portlets/widgets/dataminermanagerwidget/client/resources/DataMiner.css
+++ b/src/main/java/org/gcube/portlets/widgets/dataminermanagerwidget/client/resources/DataMiner.css
@@ -4,9 +4,7 @@
 @external menuImgLogo,menuItemImage,menuItemImage-selected;
 @external computationExcecutionPanel,computationStatusPanel,computationStatusTitle,computationStatusDate;
 @external computation-output-outputType,computation-output-groupTitle,computation-output-separator,computation-output-fileName;
-
-
-/* Data Miner */
+	/* Data Miner */
 .smLayoutContainer {
 	/* Blue
 	box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.11), 0 0 0
@@ -68,8 +66,8 @@
 	-moz-border-radius: 0;
 	-webkit-border-radius: 0;
 	-o-border-radius: 0;
-	/*padding: 10px;*/
-/*margin-bottom: 30px;
+	/*padding: 10px;	
+	margin-bottom: 30px;
 	margin-left: 200px;
 	width: 480px;*/
 }
@@ -119,18 +117,24 @@
 	/*background-image: url(images/triangle-right.png);*/
 	background-repeat: no-repeat;
 	background-position: right;
+	height: auto;
+	width: auto;
 }
 
-
-
 @sprite .categoryItem-Collapsed {
 	gwt-image: "triangleRight";
 	/*"background-image: url(images/triangle-right.png);*/
+	background-position: right;
+	height: auto;
+	width: auto;
 }
 
 @sprite .categoryItem-Expanded {
 	gwt-image: "triangleDown";
 	/*"background-image: url(images/triangle-down.png);*/
+	background-position: right;
+	height: auto;
+	width: auto;
 }
 
 .categoryItem:hover {
@@ -249,7 +253,6 @@
 	border: 1px solid black;
 	/*margin-left: 5px;
 	margin-right: 5px;*/
-		
 }
 
 .workflow-icon {
diff --git a/src/main/resources/org/gcube/portlets/widgets/dataminermanagerwidget/client/resources/DataMiner.css b/src/main/resources/org/gcube/portlets/widgets/dataminermanagerwidget/client/resources/DataMiner.css
index adf0c77..77530c9 100644
--- a/src/main/resources/org/gcube/portlets/widgets/dataminermanagerwidget/client/resources/DataMiner.css
+++ b/src/main/resources/org/gcube/portlets/widgets/dataminermanagerwidget/client/resources/DataMiner.css
@@ -4,9 +4,7 @@
 @external menuImgLogo,menuItemImage,menuItemImage-selected;
 @external computationExcecutionPanel,computationStatusPanel,computationStatusTitle,computationStatusDate;
 @external computation-output-outputType,computation-output-groupTitle,computation-output-separator,computation-output-fileName;
-
-
-/* Data Miner */
+	/* Data Miner */
 .smLayoutContainer {
 	/* Blue
 	box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.11), 0 0 0
@@ -68,8 +66,8 @@
 	-moz-border-radius: 0;
 	-webkit-border-radius: 0;
 	-o-border-radius: 0;
-	/*padding: 10px;*/
-/*margin-bottom: 30px;
+	/*padding: 10px;	
+	margin-bottom: 30px;
 	margin-left: 200px;
 	width: 480px;*/
 }
@@ -119,18 +117,24 @@
 	/*background-image: url(images/triangle-right.png);*/
 	background-repeat: no-repeat;
 	background-position: right;
+	height: auto;
+	width: auto;
 }
 
-
-
 @sprite .categoryItem-Collapsed {
 	gwt-image: "triangleRight";
 	/*"background-image: url(images/triangle-right.png);*/
+	background-position: right;
+	height: auto;
+	width: auto;
 }
 
 @sprite .categoryItem-Expanded {
 	gwt-image: "triangleDown";
 	/*"background-image: url(images/triangle-down.png);*/
+	background-position: right;
+	height: auto;
+	width: auto;
 }
 
 .categoryItem:hover {
@@ -249,7 +253,6 @@
 	border: 1px solid black;
 	/*margin-left: 5px;
 	margin-right: 5px;*/
-		
 }
 
 .workflow-icon {