Changing monetory order from '500 RM' to 'RM 500' in openerp7

In openerp the monetary value (total of the line items) is shown like below ![enter image description here][1] [1]: http://i.stack.imgur.com/8u3nW.png Is it possible to display like **RM 100** everywhere. The actual line in xml is below I got a clue to edit it in under web/xml/base.xml but not sure of how to do that. Any idea of how to do this?