ShortJsGist

pushState "Change url bar"

/*This can now be done in Chrome, Safari, FF4+, and IE10pp4+!
See this question's answer for more info: Updating address bar with new URL without hash or reloading the page
Example:*/

function processAjaxData(response, urlPath){
     document.getElementById("content").innerHTML = response.html;
     document.title = response.pageTitle;
     window.history.pushState({"html":response.html,"pageTitle":response.pageTitle},"", urlPath);
 }

//You can then use window.onpopstate to detect the back/forward button navigation:

window.onpopstate = function(e){
    if(e.state){
        document.getElementById("content").innerHTML = e.state.html;
        document.title = e.state.pageTitle;
    }
};