I open a new window using the following code:

purchaseWin = window.open(Purchase.aspx,purchaseWin2, location=0,status=0,scrollbars=0,width=700,height=400);

I want to access the dom tree of the purchaseWin, e.g.

purchaseWin.document.getElementById(tdProduct).innerHTML = 2;

It doesn't work. I can only do this:

purchaseWin.document.write(abc);

I also try this and it doesn't work too:

 $(purchaseWin.document).ready(function(){



     purchaseWin.$(#tdProduct).html(2);



   });

What should I do?