window.addEvent('domready', function(){	// You can skip the following line. We need it to make sure demos	// are runnable on MooTools demos web page.	var demo_path = window.demo_path || '';	// --	//We can use one Request object many times.	var req = new Request({		url: demo_path + 'data.txt',		onSuccess: function(txt){			$('result').set('text', txt);		},		// Our request will most likely succeed, but just in case, we'll add an		// onFailure method which will let the user know what happened.		onFailure: function(){			$('result').set('text', 'The request failed.');		}	});	$('makeRequest').addEvent('click', function(){		req.send();	});	$('failedRequest').addEvent('click', function(e){		//We can pass new options for our Request object to the send method.		req.send({url:'/assets/not_here.txt'});	});});