Loading dynamically generated content after page reload

I have a Google Instant style search script written in jQuery. When a user searches, a URL is created which is something like #search/QUERY/1/. However, when you either reload the page, click a result which goes to a different page or return back from a previous page the search results are no longer there. Why could this be?

My jQuery code is:

$(document).ready(function(){
    $("#search").keyup(function(){
        var search=$(this).val();
        var query=encodeURIComponent(search);
        var yt_url='search.php?q='+query+'&category=web';
        window.location.hash='search/'+query+'/1/';
        document.title=$(this).val()+" - My Search Script";
        if(search==''){
            window.location.hash='';
            document.title='My Search Script';
        }
        $.ajax({
            t开发者_StackOverflow中文版ype:"GET",
            url:yt_url,
            dataType:"html",
            success:function(response){
                if(response !=""){
                $("#result").html(response);
                } else {
                $("#result").html("No results were found.");
                }
            }
        });
    });
});

$(document).ready(function(){
    /// Your original key up here...

    // With browser's back you should get your hash back, so you should be
    // able to fill in the query value back and simulate key release to trigger search
    if(window.location.hash.indexOf('#search/') == 0) {
        query = window.location.hash.replace('#search/', '').replace('/1/', '');
        $('#search').val(decodeURIComponent(query)).keyup();
    }

});

Because its return to the previous state of the page before the search.

Maybe this can be a workaround:

$(document).ready(function(){
   /* 
     your code here
   */ 
   if ($("#search").val() != "")
     $("#search").keyup();
});

So it will mimic the behavior of when the user is searching when the page reloads, return back, etc..