title: Remember page contents
body: <p>Some dynamic webpages somehow remember all its dynamic contents after leaving the page and when you push back button on browser the old page exactly looks like as you left it(including dynamic contents), some of them even remember which part of page you were focusing before leaving and after getting back scrolls exactly to part of the page that you were looking at.</p>
  
  <p>I have a dynamic page that its contents change with ajax calls, I wanna make it possible that when user left and come back to page  see it exactly as  it was before leaving.</p>
  
  <p>any helping idea is appreciated</p>