Showing uploaded image

I know I have very simple problem. But I couldn't.
I want to show uploaded image. I use FileUploadField (in ExtJS 2.2) component to upload image.
Then how can I show image? I plan to use html property of panel component.
Is it a right way?

thanks.

i just el.update('<img src="somesource.jpg">');

Thank you jgarcia.
It solves my problem.