Simon :

 

    Could you provide more details ?

 

    Do you visit the http://aaa.bbb.com/editor.aspx , and then the template is http://aaa.bbb.com/template.aspx

 

    And in the editor.aspx , you do :

 

    document.domain="bbb.com" ? 
    or 
    document.domain="child.aaa.bbb.com" ?
    or
    document.domain="other.com" ?

 

 Regards , Terry .