diff --git a/display.py b/display.py
index 646d049..ab9e582 100644
--- a/display.py
+++ b/display.py
@@ -57,13 +57,13 @@ class DisplayHTMLBlockTable(DisplayHTMLBlock):
         super(DisplayHTMLBlockTable, self).__init__(title=title)
         self.cols = cols
         self.rows = []
-        self.cols_cssclasses = ['' for e in cols]
+        self.cols_cssclasses = [''] * len(cols)
         self.rows_cssclasses = []
         self.table_css = 'iwla_table'
 
     def appendRow(self, row):
         self.rows.append(listToStr(row))
-        self.rows_cssclasses.append(['' for e in row])
+        self.rows_cssclasses.append([''] * len(row))
 
     def getCellValue(self, row, col):
         if row < 0 or col < 0 or\
@@ -103,8 +103,7 @@ class DisplayHTMLBlockTable(DisplayHTMLBlock):
         if row < 0 or row >= len(self.rows):
             raise ValueError('Invalid indice %d' % (row))
 
-        for i in range(0, self.rows_cssclasses[row]):
-            self.rows_cssclasses[row][i] = value
+        self.rows_cssclasses[row] = [value] * len(self.rows_cssclasses[row])
 
     def setColCSSClass(self, col, value):
         if col < 0 or col >= len(self.cols):
@@ -155,7 +154,7 @@ class DisplayHTMLBlockTableWithGraph(DisplayHTMLBlockTable):
         self.icon_path = 'resources/icon'
         # self.icon_path = self.iwla.getConfValue('icon_path', '/')
         self.raw_rows = []
-        self.maxes = [0 for c in cols]
+        self.maxes = [0] * len(cols)
         self.table_graph_css = 'iwla_graph_table'
 
     def appendRow(self, row):
@@ -213,7 +212,7 @@ class DisplayHTMLBlockTableWithGraph(DisplayHTMLBlockTable):
         html += '</tr>'
         html += '<tr>'
         for i in range(0, len(self.short_titles)):
-            style = self.getCellCSSClass(0, j)
+            style = self.getCellCSSClass(i, 0)
             if style: style = ' class="%s"' % (style)
             html += '<td%s>%s</td>' % (style, self.short_titles[i])
         html += '</tr>'
diff --git a/iwla.py b/iwla.py
index 6192312..16b3b08 100755
--- a/iwla.py
+++ b/iwla.py
@@ -7,6 +7,7 @@ import pickle
 import gzip
 import importlib 
 from calendar import monthrange
+from datetime import date
 
 import default_conf as conf
 import conf as _
@@ -260,6 +261,9 @@ class IWLA(object):
             days.setCellValue(i, 4, bytesToStr(row[4]))
             days.setCellValue(i, 5, bytesToStr(row[5]))
             days.appendShortTitle(cur_day)
+            week_day = date(cur_time.tm_year, cur_time.tm_mon, i+1).weekday()
+            if week_day == 5 or week_day == 6:
+                days.setRowCSSClass(i, 'iwla_weekend')
 
         stats = self.current_analysis['month_stats']
 
diff --git a/resources/css/iwla.css b/resources/css/iwla.css
index a694c21..a1be30c 100644
--- a/resources/css/iwla.css
+++ b/resources/css/iwla.css
@@ -61,6 +61,7 @@ td:first-child
 .iwla_hit     { background : #66DDEE; }
 .iwla_bandwidth { background : #2EA495; }
 .iwla_search  { background : #F4F090; }
+.iwla_weekend { background : #ECECEC; }
 
 .iwla_graph_table
 {