install_ajax_fail_contrib = function ()
{
    Wicket.Ajax.Request.prototype.originalFailure= Wicket.Ajax.Request.prototype.failure;
    Wicket.Ajax.Request.prototype.failure = extra_failure_processing;
}

extra_failure_processing = function ()
{
    var retval =  this.originalFailure();    
    var params = notWicketParamsFromUrl( this.url );
//    var hash = window.location.hash;
    window.location.hash = params;
    window.location.reload();
    window.location.hash = params;
/*
    window.location.search = "";
*/
    return retval;
}