Change domain "mysite.com/page1" to "mysite.com"

I have "mysite.com/page1/index.xhtml" and when using history.js the url is changed to "mysite.com/page1/page2" and should be "mysite.com/page2", like working on domain "mysite.com" and not "mysite.com/page1", ie return one level up by changing to "mysite.com/page2?