'FileReference' is undefined + HTML5canvas

var root = this;
var file1 = new FileReference;
var fileLoader1 = new Loader;


function start1(evt) {
	loadImageBtn1.addEventListener("click", showDialog1.bind(this));
}
start1();

function showDialog1(evt) {
	this.file1 = new FileReference;
	var imageFileTypes1 = new FileFilter("Images (*.jpg, *.png, *.gif)", "*.jpg;*.png;*.gif");
	this.file1.browse([imageFileTypes1]);
	file1.addEventListener("select", selectFile1);
}
function selectFile1(evt) {
	file1.addEventListener("complete", loadFile1);
	file1.load();
}
function loadFile1(evt) {

	this.fileLoader1.loadBytes("file1");
	displayImage1();
}
function displayImage1(evt) {
	fileLoader1.height = 156;
	fileLoader1.width = 156;
	fileLoader1.x = 360.25;
	fileLoader1.y = 245.9;
	this.addChild(fileLoader1);
}