javascript: How to reload image in PaintWeb without refreshing page?

I am using this open source tool for a project where I have to reload a new image in every few seconds.

The integration document says that imageLoad() function must be use to load new images to the canvas. http://ift.tt/1vviSq9

pw.imageLoad(anotherImageElement); : This does not seem to work when I put it in the code.

Although, when I refresh the page, the new image opens up.

Is there any other way to load another image into the canvas without refreshing the page?

javascript