<script>
a=escape("Превед Медвед!!!");
document.write(a);
</script>

%u041F%u0440%u0435%u0432%u0435%u0434%20%u041C%u0435%u0434%u0432%u0435%u0434%21%21%21

a="%u041F%u0440%u0435%u0432%u0435%u0434%20%u041C%u0435%u0434%u0432%u0435%u0434%21%21%21"
document.write(unescape(a));