Added ability to format currency without a dollar sign (i.e. in raw numerical format).

git-svn-id: file:///svn-source/pmgr/branches/yafr_20090716@492 97e9348a-65ac-dc4b-aefc-98561f571b83

site/views/helpers/format.php

@@ -19,13 +19,13 @@ class FormatHelper extends AppHelper {
 		true));
   }
 
-  function currency($amount, $spans = false) {
+  function currency($amount, $spans = false, $dollar_sign = null) {
     if (!isset($amount))
       return '-';
       //return null;
 
     $currency = self::$number->currency($amount,
-					'USD',
+					isset($dollar_sign) ? $dollar_sign : 'USD',
 					$spans ? array('before'=>'', 'after'=>'') : array());
 
     if ($spans)