response.setContentType("text/html; charset=UTF-8");
ResponseRenderAppender appender = new ResponseRenderAppender(response);
ScriptTag.State state = new ScriptTag.State();
ScriptTag br = (ScriptTag) TagRenderingBase.Factory.getRendering(TagRenderingBase.SCRIPT_TAG, request);
state.suppressComments = false;
br.doStartTag(appender, state);
appender.append(ScriptRequestState.getString("popupReturn_begin", null));
assert request instanceof HttpServletRequest : request.getClass().getName();
HttpServletRequest httpRequest = (HttpServletRequest) request;