The CSS-P specification allows that any tag can be positioned. However Netscape 4 only supports the positioning of elements that have an opening and closing tag. This means you cannot control the position of an IMG object on its own unless you encapsulate it correctly within the document. You can control the position of an IMG object if it is enclosed within a set of balanced <SPAN>, <DIV> or <A> HTML tags.
Netscape 4 also converts any absolutely positioned <DIV> tags into layers. This means you can manipulate them as layers but this requires special script code that is only usable on version 4 of Netscape. This has completely changed on Netscape 6.0.