<customUI  xmlns="http://schemas.microsoft.com/office/2009/07/customui" onLoad="RibbonLoad"> 
    <ribbon startFromScratch="false"> 
           <tabs> 
                 <tab id="test" label="Exercice" visible="true" >
                        <group id="client" label="Clients"> 
                        	<button id="liste_client" label="Liste clients" size="large" onAction="Ouvre_liste_client" imageMso="FileCreateDocumentWorkspace"     screentip="Clients"  supertip="Cliquez ici pour visualiser la liste des clients"  /> 
                               	<button id="nouveau_client" label="Nouveau client" size="large" onAction="Ouvre_detail_client" imageMso="AddOrRemoveAttendees"/>
                       </group> 
                        <group id="employe" label="Employs"> 
                        	<button id="liste_employe" label="Liste employs" size="large" onAction="Ouvre_liste_employe" imageMso="MailMergeSelectRecipients" /> 
                               	<button id="nouvel_employe" label="Nouvel employ" size="large" onAction="Ouvre_detail_employe" imageMso="DistributionListAddNewMember"/>
                        </group> 
                 </tab> 
          </tabs> 
    </ribbon> 
</customUI>