Check FacesMessage in a JSP

[Bouquet, Marc]

How can I check in a JSP-Page if the FacesMessage is empty?

-- JSP / JSF - Page  --------------
if( !empty FacesMessage )
{
  <fieldset>
    <h:messages styleClass="errormsg" infoClass="infomsg" layout="table"
showSummary="true" showDetail="true" globalOnly="true"/>
  </fieldset>
}
else
{
  nothing
}
-----------------------------------

thanks for your feedback
Marc