As I told you the last time you asked about nesting: The browser works with a DOM (Document Object Model).  IE exposes the DOM API through COM.   Both the Internet Explorer window and each frame are a "document container" - each document has it's own DOM.  To get to objects in other documents, you must set up a new DOM context (you must drill into nested documents). For the most part, IE.au3 and the DOM treat iFrames and Frames the same. So, if your structure above is accurate,  the foll