Button welcher die Seite Reloaded

[Hanna]

<script>
 document.write("TEXT ABC");
 document.write("<br>");
        (...)
 if (Feld_AAA!="NO Error")
 {
 Error_Function();
 document.write('<input type="button" name="RESTART" value="RESTART" onclick=parent.refresh()>');
        }

</script>