Javascript download contents of a element

[netboy69]

Basically I have a live html editor in javascript and I want to add the ability for the user to click a button or link and download their html document. My idea was just to download the file with the contents of the textarea element, but I can't seem to find out how.I do have php if any server-side things are needed, it doesn't have to be strictly javascript but I want an option to do this. Thanks! And please comment because sometimes my questions can be rather confusing :|