var request = createRequest();
function createRequest() {
	var request = null;
	try {
		request = new XMLHttpRequest();
	} catch ( e ) {
		try {
			request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch ( e ) {
			try{
				request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch ( e ) {
				alert("Couldn't create request!");
			}
		}
	}
	return request;
}

function sendRequestMovies() {
	var attribute = document.getElementById('attribute').value;
	var type = document.getElementById('type').value;
	
	request.open('get', document.getElementById('movies_input').value + '?attribute=' + attribute + '&type=' + type);
	request.onreadystatechange = handleResponseMovies;
	request.send(null);
}

function handleResponseMovies() {
	if ( 4 == request.readyState ) {
		document.getElementById('movies_output').innerHTML = request.responseText;
	}			
}