function whois(staff_id)
{
	$.post("content/whois_ajax.php", { staff_id: staff_id},
	  function(html){

			$('<div id="id_popup_competence_staff_'+staff_id+'">'+html+'</div>').dialog({
				close:function(){$('#id_popup_competence_staff_'+staff_id).dialog('destroy').remove();},
				open:function(){
					$("#id_tree_comptences_staff").tree({		
						types : {
							// all node types inherit the "default" node type
							"category" : {
								deletable : false,
								renameable : false,
								draggable : false
							},
							"competence" : {
								draggable : false,
								icon : { 
									image : "none"
								}
							}
						}
					});
				}
			});
			
	  });
}