Hi every body.
I'm developing a portlet in liferay. I want to have a textbox that is a date input.

1. Error too much recursion when using <liferay-ui:inputdate> tag:
Errors follow when I bugged by Firebug in Firefox Browser:

too much recursion
d.__msh_oldSetFullYear(y);
at calendar.js (line 1672)

In jsp file I add following line:
<%@ include file="/html/portlet/ext/hello_world/init.jsp" %>
<%@ taglib uri="http://liferay.com/tld/ui" prefix="liferay-ui" %>

Hello world!
<br/>
<liferay-ui:input-date yearRangeEnd="2010" yearRangeStart="2000"></liferay-ui:input-date>

2. I'm used dynarch calendar example in my portlet but I got same errors in session 1 above.
I've modified code to link to js in liferay:

<link rel="stylesheet" type="text/css" media="all" href="<%= themeDisplay.getPathContext() %>/html/css/skins/aqua/theme.css" title="Aqua" />
<link rel="alternate stylesheet" type="text/css" media="all" href="<%= themeDisplay.getPathContext() %>/html/css/calendar-blue.css" title="winter" />
<link rel="alternate stylesheet" type="text/css" media="all" href="<%= themeDisplay.getPathContext() %>/html/css/calendar-blue2.css" title="blue" />
<link rel="alternate stylesheet" type="text/css" media="all" href="<%= themeDisplay.getPathContext() %>/html/css/calendar-brown.css" title="summer" />
<link rel="alternate stylesheet" type="text/css" media="all" href="<%= themeDisplay.getPathContext() %>/html/css/calendar-green.css" title="green" />
<link rel="alternate stylesheet" type="text/css" media="all" href="<%= themeDisplay.getPathContext() %>/html/css/calendar-win2k-1.css" title="win2k-1" />
<link rel="alternate stylesheet" type="text/css" media="all" href="<%= themeDisplay.getPathContext() %>/html/css/calendar-win2k-2.css" title="win2k-2" />
<link rel="alternate stylesheet" type="text/css" media="all" href="<%= themeDisplay.getPathContext() %>/html/css/calendar-win2k-cold-1.css" title="win2k-cold-1" />
<link rel="alternate stylesheet" type="text/css" media="all" href="<%= themeDisplay.getPathContext() %>/html/css/calendar-win2k-cold-2.css" title="win2k-cold-2" />
<link rel="alternate stylesheet" type="text/css" media="all" href="<%= themeDisplay.getPathContext() %>/html/css/calendar-system.css" title="system" />

<!-- import the calendar script -->
<script type="text/javascript" src="<%= themeDisplay.getPathContext() %>/html/js/calendar/calendar.js"></script>

<!-- import the language module -->
<script type="text/javascript" src="<%= themeDisplay.getPathContext() %>/html/js/calendar/lang/calendar-en.js"></script>

Please help me. Thank you very much.