Adding Images To Html5 Canvas ?

I'm trying to figure out how to add images to a canvas element. I found a good site, but for some reason my images turn out bigger than expected.

Here's what I use (It's from different functions in different places, but essentially that is the relevant code). Assume there is a gameObject which has all the functions that I use. I tried replacing the functions with constant values but that made no difference:

PHP Code:

Somehow the image shows up much bigger than 69 pixels width and height. When I make the canvas smaller the image scales down with the canvas. So when I make the canvas twice as small, the image becomes twice as small as well. Seems like it is not using pixels as units.