$(function(){
      if(window.location.hash.indexOf("filter") != -1){
            var url = window.location.pathname;
            if(url.charAt(-1) != "/")
            {
                  url += "/";
            }
            $.get(url+"filter/on/?ajax=true", replace_table);
      }
});

function replace_table(data)
{
    var newEl = $(data);
    newEl.find("#results").replaceAll('#results');
    window.location.hash = "filter";
}