IE7 Access Denied On Window.document.write() From Bookmarklet

I am trying to write a bookmarklet that will let me know an object.For the most part, it works as best I could hope until I try it on a real page.For the purposes of understanding, I am using the Bookmarklet builder here [URL] for testing.

Here is the code:

(function (){
var theObjStr = prompt('What Object would you like to know?','');
var theObj = eval(theObjStr);

[code]....

I compress the code, and test it via the link on the bottom of the page and everything works magically.Add the Bookmarklet to your favorites, and go to [URL] and try to run it in IE7.I am getting an access denied error when the code gets to the line:

var wHndDoc = jjPopWin.document; I have tried everything including just calling a straight
jjPopWin.document.write();
with the same results.

I am on Windows XP SP3, Using IE7 (works great in Firefox 2 &3).