Mail Portlet Works for all browsers except IE 5.5 and below (see quirksmode.org/css/user-interface/cursor.html#note)
LPS-50220 compat of CookieKeys, copied from 6.2.x. This class in 6.1.x is in core at com.liferay.portal.util.CookieKeys but is in com.liferay.portal.kernel.util.CookieKeys in 6.2.x