diff --git a/rowers/interactiveplots.py b/rowers/interactiveplots.py
index 02fb115b..7450ee0a 100644
--- a/rowers/interactiveplots.py
+++ b/rowers/interactiveplots.py
@@ -2114,7 +2114,7 @@ def interactive_streamchart(id=0,promember=0):
 
     return [script,div]
 
-def interactive_chart(id=0,promember=0):
+def interactive_chart(id=0,promember=0,intervaldata = {}):
     # Add hover to this comma-separated string and see what changes
     if (promember==1):
 	TOOLS = 'save,pan,box_zoom,wheel_zoom,reset,tap,hover,resize,crosshair'
@@ -2219,6 +2219,24 @@ def interactive_chart(id=0,promember=0):
     plot.add_layout(LinearAxis(y_range_name="spmax",axis_label="SPM"),'right')
 
     plot.legend.location = "bottom_right"
+
+    # add shaded bar chart areas
+    intervaldf = pd.DataFrame(intervaldata)
+    intervaldf['itime'] = intervaldf['itime']*1.e3
+    intervaldf['time'] = intervaldf['itime'].cumsum()
+    intervaldf['time_r'] = intervaldf['time'] +intervaldf['itime'].shift(-1)
+    intervaldf['value'] = 45
+    mask = intervaldf['itype'] == 3
+    intervaldf.loc[mask,'value'] = 10
+    intervaldf['bottom'] = 10
+
+    intervalsource = ColumnDataSource(
+        intervaldf
+        )
+    
+    plot.quad(left='time',top='value',bottom='bottom',
+              right='time_r',source=intervalsource,color='gray',
+              y_range_name='spmax',fill_alpha=0.2,line_alpha=0.2)
  
     script, div = components(plot)
 
diff --git a/rowers/views.py b/rowers/views.py
index d64b4f38..7948a933 100644
--- a/rowers/views.py
+++ b/rowers/views.py
@@ -11286,13 +11286,6 @@ def workout_summary_edit_view(request,id,message="",successmessage=""
         return HttpResponse("Error: CSV Data File Not Found")
     nrintervals = len(idist)
 
-    # create interactive plot
-    try:
-	res = interactive_chart(id,promember=1)
-	script = res[0]
-	div = res[1]
-    except ValueError:
-	pass
     
     savebutton = 'nosavebutton'
     formvalues = {}
@@ -11310,8 +11303,16 @@ def workout_summary_edit_view(request,id,message="",successmessage=""
     data = {
         'power': int(normp),
         'pace': avpace,
-        'selector': normp,
+        'selector': 'power',
         }
+
+    powerorpace = 'power'
+
+    if normp == 0:
+        data['selector'] = 'pace'
+        powerorpace = 'pace'
+
+        
     
     powerupdateform = PowerIntervalUpdateForm(initial=data)
     
@@ -11568,6 +11569,22 @@ def workout_summary_edit_view(request,id,message="",successmessage=""
 
     detailform = IntervalUpdateForm(aantal=nrintervals,initial=initial)
 
+    # create interactive plot
+    try:
+        intervaldata = {
+            'itime':itime,
+            'idist':idist,
+            'itype':itype,
+            'selector': powerorpace,
+            'normp': normp,
+            'normv': normv,
+            }
+	res = interactive_chart(id,promember=1,intervaldata=intervaldata)
+	script = res[0]
+	div = res[1]
+    except ValueError:
+	pass
+
     # render page
 
     return render(request, 'summary_edit.html',