function clearDefault(el) {
  if (el.defaultValue==el.value) el.value = ""
}
document.writeln('<link rel="stylesheet" type="text/css" href="fileadmin/vorlagen/jsmenu_on.css">');
document.writeln('<!--[if IE 7]><link rel="stylesheet" type="text/css" href="fileadmin/vorlagen/jsmenu_off.css"><![endif]-->');
document.writeln('<!--[if IE 8]><link rel="stylesheet" type="text/css" href="fileadmin/vorlagen/jsmenu_off.css"><![endif]-->');