function sort_results(column, location_id, page){
    document.getElementById('hostels-list').innerHTML='';
    var qstr = 'action=sort_results';
    qstr += '&column='+column;
    qstr += '&location_id='+location_id;
    qstr += '&page='+page;
    
    new Ajax.Request(ajax_script_url,{
      method: 'post',
      parameters: qstr,
      onLoading: function(transport) {
        $('hostels-list').innerHTML='loading...';
      },      
      onSuccess: function(transport) {
        $('hostels-list').innerHTML = transport.responseText;
    }})
    return false;
}