erp5_xhtml_style/erp5.js.js: add onchange event handler to textareas in listbox as well.

product/ERP5/bootstrap/erp5_xhtml_style/SkinTemplateItem/portal_skins/erp5_xhtml_style/erp5.js.js

@@ -254,7 +254,7 @@ var addOnChangeEventHandler = function() {
               if ($(this).attr("class") == "listbox-search-line") {
                 return non-false;
               }
-              $(this).find('input').each(function(){
+              $(this).find('input,textarea').each(function(){
                 if ($(this).attr("type") != "hidden" &&
                     !this.onchange) {
                   this.onchange = function() { changed = true; };