diff --git a/addons/account/report/account_balance.py b/addons/account/report/account_balance.py
index 01327a8b0cc..6b4d510cb86 100644
--- a/addons/account/report/account_balance.py
+++ b/addons/account/report/account_balance.py
@@ -79,50 +79,7 @@ class account_balance(report_sxw.rml_parse):
                 
             return str(result and result[:-1]) or ''
 
-        def transform_both_into_date_array(self, data):
-            
-            if not data['periods'][0][2]:
-                if not data['fiscalyear']:
-                    return True
-                periods_id =  self.pool.get('account.period').search(self.cr, self.uid, [('fiscalyear_id','=',data['fiscalyear'])])
-            else:
-                periods_id = data['periods'][0][2]
-            date_array = []
-            for period_id in periods_id:
-                period_obj = self.pool.get('account.period').browse(self.cr, self.uid, period_id)
-                date_array = date_array + self.date_range(period_obj.date_start,period_obj.date_stop)
-
-            period_start_date = date_array[0]
-            date_start_date = data['date_from']
-            period_stop_date = date_array[-1]
-            date_stop_date = data['date_to']
-
-            if period_start_date<date_start_date:
-                start_date = period_start_date
-            else :
-                start_date = date_start_date
-
-            if date_stop_date<period_stop_date:
-                stop_date = period_stop_date
-            else :
-                stop_date = date_stop_date
-            final_date_array = []
-            final_date_array = final_date_array + self.date_range(start_date, stop_date)
-            self.date_lst = final_date_array
-            self.date_lst.sort()
-
-        def transform_none_into_date_array(self,data):
-            sql = "SELECT min(date) as start_date from account_move_line"
-            self.cr.execute(sql)
-            start_date = self.cr.fetchone()[0]
-            sql = "SELECT max(date) as start_date from account_move_line"
-            self.cr.execute(sql)
-            stop_date = self.cr.fetchone()[0]
-            array= []
-            array = array + self.date_range(start_date, stop_date)
-            self.date_lst = array
-            self.date_lst.sort()
-
+        
         def lines(self, form, ids={}, done=None, level=1):
             if not ids:
                 ids = self.ids
@@ -137,22 +94,17 @@ class account_balance(report_sxw.rml_parse):
             result_acc=[]
             ctx = self.context.copy()
             if form['state']=='byperiod' :
-                self.transform_period_into_date_array(form)
                 ctx['fiscalyear'] = form['fiscalyear']
                 ctx['periods'] = form['periods'][0][2]
             elif form['state']== 'bydate':
                 ctx['fiscalyear'] = form['fiscalyear']
                 ctx['date_from'] = form['date_from']
                 ctx['date_to'] =  form['date_to'] 
-                self.transform_date_into_date_array(form)
             elif form['state'] == 'all' :
                 ctx['fiscalyear'] = form['fiscalyear']
                 ctx['date_from'] = form['date_from']
                 ctx['date_to'] =  form['date_to']
-                self.transform_both_into_date_array(form)
-            elif form['state'] == 'none' :
-                self.transform_none_into_date_array(form)
-
+        
             accounts = self.pool.get('account.account').browse(self.cr, self.uid, ids, ctx)
             def cmp_code(x, y):
                 return cmp(x.code, y.code)
@@ -207,39 +159,7 @@ class account_balance(report_sxw.rml_parse):
                     result_acc += self.lines(form, ids2, done, level+1)
 
             return result_acc
-
-        def date_range(self,start,end):
-            start = datetime.date.fromtimestamp(time.mktime(time.strptime(start,"%Y-%m-%d")))
-            end = datetime.date.fromtimestamp(time.mktime(time.strptime(end,"%Y-%m-%d")))
-            full_str_date = []
-        #
-            r = (end+datetime.timedelta(days=1)-start).days
-        #
-            date_array = [start+datetime.timedelta(days=i) for i in range(r)]
-            for date in date_array:
-                full_str_date.append(str(date))
-            return full_str_date
-
-        #
-        def transform_period_into_date_array(self,form):
-            ## Get All Period Date
-            if not form['periods'][0][2] :
-                periods_id =  self.pool.get('account.period').search(self.cr, self.uid, [('fiscalyear_id','=',form['fiscalyear'])])
-            else:
-                periods_id = form['periods'][0][2]
-            date_array = []
-            for period_id in periods_id:
-                period_obj = self.pool.get('account.period').browse(self.cr, self.uid, period_id)
-                date_array = date_array + self.date_range(period_obj.date_start,period_obj.date_stop)
-
-            self.date_lst = date_array
-            self.date_lst.sort()
-
-        def transform_date_into_date_array(self,form):
-            return_array = self.date_range(form['date_from'],form['date_to'])
-            self.date_lst = return_array
-            self.date_lst.sort()
-
+        
         def _sum_credit(self):
             return self.sum_credit