var list = Array();

			function get_ajax() {
				var avar = new Ajax.Request('test.php',
   				{ 
   					method: 'get', 
   					onSuccess: function(transport){ 
   					var response = transport.responseText || "no response text";
   					list = response.split("|"); 
						},
   					onFailure: function(){ alert('failure') }
   				}
				);
				alert(list);
			}