diff --git a/optional-app/README.md b/optional-app/README.md
index 70e7b1d..b61b916 100644
--- a/optional-app/README.md
+++ b/optional-app/README.md
@@ -4,4 +4,4 @@ How to install  depends on app.<br>
 
 # webcam #
 
-![image](http://blog.iotwrt.com/wp-content/uploads/2015/01/webcam.png)
+![image](http://blog.iotwrt.com/wp-content/uploads/2015/01/webcam1.png)
diff --git a/optional-app/webcam/django/html/webcam.html b/optional-app/webcam/django/html/webcam.html
index 0ace096..7006f44 100644
--- a/optional-app/webcam/django/html/webcam.html
+++ b/optional-app/webcam/django/html/webcam.html
@@ -48,6 +48,7 @@
                         }
                     });                   
                 }
+                $("#surface").attr('src', "temp.jpg?t=" + Math.random());
             });     
     });
     $("#refresh").click( function(){   
@@ -82,8 +83,9 @@ <h1>
    </center>
 </div>
 <div class="row">
-    <center>
-        <img id="surface" src="temp.jpg" style="margin-top: 60px;"></img>
+    <center style="margin-top: 60px;">
+        <h1>snapshot<h1>
+        <img id="surface" src="temp.jpg" style="margin-top: 20px;"></img>
    </center>
 </div>
 
diff --git a/optional-app/webcam/django/tmp/cancel.png b/optional-app/webcam/django/tmp/cancel.png
new file mode 100644
index 0000000..82524e1
Binary files /dev/null and b/optional-app/webcam/django/tmp/cancel.png differ
diff --git a/optional-app/webcam/django/views.py b/optional-app/webcam/django/views.py
index ff01765..26e214f 100644
--- a/optional-app/webcam/django/views.py
+++ b/optional-app/webcam/django/views.py
@@ -25,14 +25,16 @@ def index(request):
     return HttpResponse(t.render(c))
 
 def image(request):
+    global camera
     http = HttpResponse(mimetype='image/jpeg')
     if camera != None:
         retval, img = camera.read()      
         cv2.imwrite(cwd + "django/tmp/tmp.jpg" , img)
         ret_img = Image.open(cwd + "django/tmp/tmp.jpg")
-        # img.save(http,'png')
-        # img = Image.frombytes("RGB", (size_x, size_y), im)
         ret_img.save(http,'JPEG')
+    else:
+        ret_img = Image.open(cwd + "django/tmp/cancel.png")
+        ret_img.save(http,'png')       
     return http
 
 def open_camera(request):
@@ -44,7 +46,7 @@ def open_camera(request):
                 camera = cv2.VideoCapture(camera_port)
                 camera.set(cv.CV_CAP_PROP_FRAME_WIDTH,320)
                 camera.set(cv.CV_CAP_PROP_FRAME_HEIGHT,240)
-                camera.set(cv.CV_CAP_PROP_FPS,1)
+                camera.set(cv.CV_CAP_PROP_FPS,10)
                 retval, img = camera.read()      #light led
             return HttpResponse(simplejson.dumps({'msg':'ok'}))   
     except: 
@@ -52,7 +54,8 @@ def open_camera(request):
 
 def close_camera(request):
     global camera
-    del(camera)
+    camera.release()
+    camera = None
     return HttpResponse(simplejson.dumps({'msg':'ok'}))