Thanks for the corrections and explanations. I'll translate the first sentence as that:
1) some object is created by a call to the constructor 2) it is created from a window 3) the window had an attribute XMLHttpRequest before this call 4) a window pointer is stored in the newly created object 5) it points out this window Is it right? Another question. Why not a responseHTML attribute? Denis Sureau - http://www.xul.fr/ajax/
