window.addEventListener('load', onLoadPage)
function qs(selector) {
return document.querySelector(selector);
}
function onLoadPage()
{
var canvas = qs('#canvas');
var image = qs('#image');
canvas.height = image.height;
canvas.width = image.width;
var context = canvas.getContext('2d');
context.drawImage(image, 0, 0);
}