CCNA, CCNP, MCSA, CCNA Final Exam, All Answer Test Module With 100/100

I have legitimate reasons to do what I am trying to explain. I have an existing site say abc.com which has regular pages etc. everything written in php. Now I would like to AJAXify the site i.e. when a user clicks on a link, it should fetch the link using AJAX and replace the page contents. This is the easy part and I can achieve it using jQuery get function. Now the problem comes when the user bookmarks the page. I can use hash tags to specify if the user is on another page, but instead of using javascript to fetch the new page again, is it possible to fetch it directly using PHP when the page is called. Can you please give me an outline on how to achieve the above. This functionality is similar to what Facebook has. Thankyou for your time. Source: Tips4all