minor fix
diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index c088042..9033065 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -299,9 +299,9 @@
 		key = item.item_code or item.item_name
 		if tax.item_wise_tax_detail.get(key):
 			item_wise_tax_amount = tax.item_wise_tax_detail[key][1] + current_tax_amount
-			tax.item_wise_tax_detail[key] = [tax_rate, item_wise_tax_amount]
+			tax.item_wise_tax_detail[key] = [tax_rate,item_wise_tax_amount]
 		else:
-			tax.item_wise_tax_detail[key] = [tax_rate, current_tax_amount]
+			tax.item_wise_tax_detail[key] = [tax_rate,current_tax_amount]
 
 		return current_tax_amount
 
@@ -316,7 +316,7 @@
 
 	def _cleanup(self):
 		for tax in self.tax_doclist:
-			tax.item_wise_tax_detail = json.dumps(tax.item_wise_tax_detail)
+			tax.item_wise_tax_detail = json.dumps(tax.item_wise_tax_detail, separators=(',', ':'))
 
 	def _set_in_company_currency(self, item, print_field, base_field):
 		"""set values in base currency"""
diff --git a/erpnext/selling/doctype/sales_order/sales_order.json b/erpnext/selling/doctype/sales_order/sales_order.json
index 102abc0..35fd8fb 100644
--- a/erpnext/selling/doctype/sales_order/sales_order.json
+++ b/erpnext/selling/doctype/sales_order/sales_order.json
@@ -2,7 +2,7 @@
  "allow_attach": 1, 
  "allow_import": 1, 
  "autoname": "naming_series:", 
- "creation": "2013-06-18 12:39:59.000000", 
+ "creation": "2013-06-18 12:39:59", 
  "docstatus": 0, 
  "doctype": "DocType", 
  "document_type": "Transaction", 
@@ -874,7 +874,7 @@
  "idx": 1, 
  "is_submittable": 1, 
  "issingle": 0, 
- "modified": "2014-01-28 18:47:42.000000", 
+ "modified": "2014-05-07 14:37:33.548622", 
  "modified_by": "Administrator", 
  "module": "Selling", 
  "name": "Sales Order",