// build the request object
var request = $H({	method:'put', 
					id:0, 
					params:{	e_site_id:site	}});

// make the request
new Ajax.Request(	'/proxy.cfm?service=logout_bar',
					{	method:'post',
						parameters:'request='+request.toJSON(),
						onSuccess:function(response) {
							var result = response.responseText.evalJSON().result;
							
							if(result.logged_in == 'true') {
								if($('logout_bar').show()) {
									$('login_name').update(result.name);
								}
							}
						}	
					});