Javascript

<script Language="JavaScript">
    function th(number){
    
        //Prototyped by: John Naudus
    
        var intTEMP;

        if (number <= 0) {
            return "";
        }
        else {
            intTEMP = number % 100;
            if (intTEMP==11) return"<sup>th</sup>";
            else if (intTEMP==12) return "<sup>th</sup>";
            else if (intTEMP==13) return "<sup>th</sup>";
            else {
                intTEMP = number % 10;
                if (intTEMP == 1) {
                    return "<sup>st</sup>";
                }
                else if (intTEMP == 2) {
                    return "<sup>nd</sup>";
                }
                else if (intTEMP == 3) {
                    return "<sup>rd</sup>";
                }
                else {
                    return "<sup>th</sup>";
                }
            }
        }

    }
</script>