V4 Javascript popup in Internet explorer

Hello,



I'm using Javascript popup for some pages and it works fine in Opera, Chrome, Safari.

But Internet Explorer puts the page-string in between the url.



Opera, Chrome, Safari:

http://www.xxxxx.nl/net-shop/klantenservice/verzendkosten.html correct



Internet Explorer:

http://www.xxxxx.nl/net-shop/[b]fietskarren-nl[/b]/klantenservice/verzendkosten.html wrong



the part fietskarren-nl shouldn't be there.



the url in the backoffice is just klantenservice/verzendkosten.html



the site root is http://www.xxxxx.nl/net-shop/



Someone has any idea?

You can submit this bug with IE version here http://forum.cs-cart.com/tracker/