Letter Head field added in purchase receipt and invoice
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.txt b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.txt
index d0eb1b3..3fafc1c 100755
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.txt
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.txt
@@ -2,7 +2,7 @@
  {
   "creation": "2013-05-21 16:16:39", 
   "docstatus": 0, 
-  "modified": "2014-01-29 15:26:54", 
+  "modified": "2014-02-11 12:01:59", 
   "modified_by": "Administrator", 
   "owner": "Administrator"
  }, 
@@ -743,6 +743,15 @@
   "read_only": 0
  }, 
  {
+  "allow_on_submit": 1, 
+  "doctype": "DocField", 
+  "fieldname": "letter_head", 
+  "fieldtype": "Select", 
+  "label": "Letter Head", 
+  "options": "link:Letter Head", 
+  "print_hide": 1
+ }, 
+ {
   "doctype": "DocField", 
   "fieldname": "fiscal_year", 
   "fieldtype": "Select", 
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.txt b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.txt
index 28c2572..44325d7 100755
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.txt
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.txt
@@ -2,7 +2,7 @@
  {
   "creation": "2013-05-21 16:16:39", 
   "docstatus": 0, 
-  "modified": "2014-01-29 15:25:14", 
+  "modified": "2014-02-11 12:01:00", 
   "modified_by": "Administrator", 
   "owner": "Administrator"
  }, 
@@ -627,6 +627,15 @@
  {
   "allow_on_submit": 1, 
   "doctype": "DocField", 
+  "fieldname": "letter_head", 
+  "fieldtype": "Select", 
+  "label": "Letter Head", 
+  "options": "link:Letter Head", 
+  "print_hide": 1
+ }, 
+ {
+  "allow_on_submit": 1, 
+  "doctype": "DocField", 
   "fieldname": "select_print_heading", 
   "fieldtype": "Link", 
   "label": "Print Heading",