var jump=function(e){
    //prevent the "normal" behaviour which would be a "hard" jump
    e.preventDefault();
    //Get the target
    var target = $(this).attr("href");
    //perform animated scrolling
    $('html,body').animate({
       //get top-position of target-element and set it as scroll target
       scrollTop: $(target).offset().top       
    //scrolldelay: 2 seconds
    }, 500, function(){
       //attach the hash (#jumptarget) to the pageurl
       location.hash = target;
    });
}
$(document).ready(function(){
  $('a[href*=#]').bind("click", jump);
});