Why IE do't delete <object> if felow by link on new page ?

I have problem.
IE do't delete ActiveX-object (do't destroy document)
if I felow by link on new page (only if I clouse IE-window
(but I read chm-book)).

I try solve this problem by script:

var myObj = document.getElementById("idMyObj").removeNode(true );
myObj.detachEvent('onMyObjEv',DoOnMyObjEv);
delete myObj;

but unsecsesful ...
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Regards,
Nikolay Klinachyov