diff --git a/ChangeLog b/ChangeLog
index b4f8adfdf..711bc9324 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2012-02-13  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
+
+	* UI/WebServerResources/JavascriptAPIExtensions.js
+	(String.asCSSIdentifier): escape the "+" character as its going to
+	be used in a regexp.
+
 2012-02-10  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
 	* UI/MailPartViewers/UIxMailPartHTMLViewer.m (+initialize): added
diff --git a/UI/WebServerResources/JavascriptAPIExtensions.js b/UI/WebServerResources/JavascriptAPIExtensions.js
index 32c7a7034..c0cc50b4a 100644
--- a/UI/WebServerResources/JavascriptAPIExtensions.js
+++ b/UI/WebServerResources/JavascriptAPIExtensions.js
@@ -71,7 +71,7 @@ String.prototype.asDate = function () {
 
 String.prototype.asCSSIdentifier = function() {
     var characters = [ '_'  , '\\.', '#'  , '@'  , '\\*', ':'  , ','   , ' '
-                       , "'", '&', '+' ];
+                       , "'", '&', '\\+' ];
     var escapeds =   [ '_U_', '_D_', '_H_', '_A_', '_S_', '_C_', '_CO_',
                        '_SP_', '_SQ_', '_AM_', '_P_' ];