diff --git a/ui/scripts/cloud.core.instance.js b/ui/scripts/cloud.core.instance.js
index 7da41295d6e..c2332513405 100644
--- a/ui/scripts/cloud.core.instance.js
+++ b/ui/scripts/cloud.core.instance.js
@@ -1652,6 +1652,8 @@ function vmToMidmenu(jsonObj, $midmenuItem1) {
     
     $midmenuItem1.data("toRightPanelFn", vmToRightPanel);   
     countTopButtonMapFn = vmCountTopButtonMap;
+    uncountTopButtonMapFn = vmUncountTopButtonMap;
+    grayoutTopButtonsFn = vmGrayoutTopButtons;
     resetTopButtonMapFn = vmResetTopButtonMap;
 }
 
@@ -1839,7 +1841,7 @@ var vmTopButtonMap = {
     "destroy_vm_button": 0
 };
 
-function vmCountTopButtonMap(jsonObj) {   
+function vmCountTopButtonMap(jsonObj) {       
     if(jsonObj == null)
         return;
         
@@ -1857,6 +1859,38 @@ function vmCountTopButtonMap(jsonObj) {
 	}
 }
 
+function vmUncountTopButtonMap(jsonObj) {       
+    if(jsonObj == null)
+        return;
+        
+	if (jsonObj.state == 'Running') {			
+		vmTopButtonMap["stop_vm_button"] -= 1;	
+		vmTopButtonMap["reboot_vm_button"] -= 1;
+		vmTopButtonMap["destroy_vm_button"] -= 1;	
+	} 
+	else if (jsonObj.state == 'Stopped') {	
+		vmTopButtonMap["start_vm_button"] -= 1;
+		vmTopButtonMap["destroy_vm_button"] -= 1;		  					
+	}
+	else if (jsonObj.state == 'Error') {		    
+	    vmTopButtonMap["destroy_vm_button"] -= 1;	    
+	}
+}
+
+function vmGrayoutTopButtons() {    
+    var itemCounts = 0;
+    for(var id in selectedItemsInMidMenu) {
+        itemCounts ++;
+    }
+      
+    for(var buttonElementId in vmTopButtonMap) {
+        if(vmTopButtonMap[buttonElementId] < itemCounts)
+            $("#"+buttonElementId).hide();
+        else 
+            $("#"+buttonElementId).show();               
+    }
+}
+
 function vmResetTopButtonMap() {
     vmTopButtonMap = {
         "start_vm_button": 0,
diff --git a/ui/scripts/cloud.core.js b/ui/scripts/cloud.core.js
index afc3a0c41c4..a8aaf3e04b9 100644
--- a/ui/scripts/cloud.core.js
+++ b/ui/scripts/cloud.core.js
@@ -989,6 +989,7 @@ function clickItemInMultipleSelectionMidmenu($midmenuItem1) {
     
     var jsonObj = $midmenuItem1.data("jsonObj");    	
     selectedItemsInMidMenu[jsonObj.id] = $midmenuItem1;  
+    countTopButtonMapFn(jsonObj);      
            
     selected_midmenu_id = $midmenuItem1.attr("id");
     $currentMidmenuItem = $midmenuItem1;
@@ -997,15 +998,20 @@ function clickItemInMultipleSelectionMidmenu($midmenuItem1) {
 function unclickItemInMultipleSelectionMidmenu($midmenuItem1, id) {    
     delete selectedItemsInMidMenu[id];
     $midmenuItem1.find("#content").removeClass("selected"); 
+    var jsonObj = $midmenuItem1.data("jsonObj");  
+    uncountTopButtonMapFn(jsonObj);   
 }
 
 var countTopButtonMapFn = function() {};
+var uncountTopButtonMapFn = function() {};
+var grayoutTopButtonsFn = function() {};
 var resetTopButtonMapFn = function() {};
 
 function createMultipleSelectionSubContainer() {      
     var $multipleSelectionSubContainer = $("<div id='multiple_selection_sub_container'></div>"); 
     $("#midmenu_container").empty().append($multipleSelectionSubContainer);    
     selectedItemsInMidMenu = {};  
+    resetTopButtonMapFn();
     
     $multipleSelectionSubContainer.selectable({
         selecting: function(event, ui) {	 	                               
@@ -1030,11 +1036,11 @@ function createMultipleSelectionSubContainer() {
                 }
             }             
         },
-        start: function(event, ui) {            
-            resetTopButtonMapFn();           
+        start: function(event, ui) {                 
+              
         },
         stop: function(event, ui) {            
-            countTopButtonMapFn();            
+            grayoutTopButtonsFn();                         
         }
     }); 
     
@@ -1099,7 +1105,8 @@ function listMidMenuItems2(commandString, getSearchParamsFn, jsonResponse1, json
                         }
                         else {                                                            
                             clickItemInMultipleSelectionMidmenu($midmenuItem1);  
-                            countTopButtonMapFn();                         
+                            countTopButtonMapFn(items[i]);  
+                            grayoutTopButtonsFn();                       
                         }                        
                     }                 
                 }