When I change on proxy-server page from cnn.com (I add javascript, that call document.location), result of the document.location.href is some url of advertisement: http://ads.cnn.com/html.ng/site=cnn_...1&domId=894131

and not current url:http://edition.cnn.com/2010/WORLD/as...ex.html?hpt=C1

Do you know, where can be problem?
edit:Problem is the same with using window.location.href