achanging the label

of the confirm ()

[ksvijay]

<input type="text" name="text1" maxlength="50">
<input type="submit" onclick="sure()">

<script>
function sure(){
confirm('Is your name really ');

}
</script>

i want to change the lable of the confirm window from "OK" "Cancel" to "Yes" "NO"

How to change this one, expecting the replies, thanks

[dcrombie]

If you use a Mac it already says "Yes" and "No". Otherwise you can't change it.