Index: minidom.py
===================================================================
--- minidom.py	(revision 83137)
+++ minidom.py	(working copy)
@@ -289,10 +289,11 @@
         node = node.parentNode
     return False
 
-def _write_data(writer, data):
+def _write_data(writer, data, isAttrib=False):
     "Writes datachars to writer."
-    data = data.replace("&", "&amp;").replace("<", "&lt;")
-    data = data.replace("\"", "&quot;").replace(">", "&gt;")
+    if isAttrib: 
+        data = data.replace("\r", "&#xD;").replace("\n", "&#xA;")
+        data = data.replace("\t", "&#x9;")
     writer.write(data)
 
 def _get_elements_by_tagName_helper(parent, name, rc):
@@ -802,7 +803,7 @@
 
         for a_name in a_names:
             writer.write(" %s=\"" % a_name)
-            _write_data(writer, attrs[a_name].value)
+            _write_data(writer, attrs[a_name].value, True)
             writer.write("\"")
         if self.childNodes:
             writer.write(">%s"%(newl))