Using Firefox 19 on Windows 7 I downloaded a webpage using "Save Page As" and saved as "Web Page, complete". It downloads both the html and a folder containing the images, css, and js. The folder and the html are siblings in the directory hierarchy. If I delete or move either the html or files folder the other is deleted or moved along with it.
I realize I just get the html by choosing "Web Page, HTML only" when saving but I'm still baffled as to how this works as I've never seen files linked in this way. Is this a feature in Windows 7? How would one go about deleting one without the other if they wanted to?