nsIHTMLEditor
in astring aattribute, in astring avalue, out boolean afirst, out boolean aany, out boolean aall ); parameters aproperty aattribute avalue afirst aany aall return value getlinkedobjects() find all the nodes in the document which contain references to outside uris (for example a href, img src, script src, and so on.) the objects in the array will be type nsiurirefobject.