Abstract: A method for editing includes processing a page of markup-language code using a browser program running on a computer so as to display the page content in a browser window on a computer screen. An embedded application embedded as an object in the markup-language code and running in the browser program is used to overlay an image in a transparent editing window over the browser window so that at least some of the content behind the editing window remains visible. The image in the transparent editing window is edited in response to user input, while at least some of the content remains visible behind the editing window. A characteristic of the image is modified and a reference to the image with the modified characteristic is placed in the markup-language code.