Javascript Fechas

Clase Date:
http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Global_Objectsate

Bueno, ya lo pongo por si a alguien le interesa.

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< html xmlns="http://www.w3.org/1999/xhtml" xml:lang="es" lang="es">

< head>

&nbsp; &nbsp; < title>An XHTML 1.0 Strict standard template< /title>

&nbsp; &nbsp; < meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

&nbsp; &nbsp; < meta http-equiv="Content-Style-Type" content="text/css" />

&nbsp; &nbsp; < script type="text/javascript" charset="utf-8">

&nbsp; &nbsp; //< ![CDATA[
&nbsp; &nbsp; &nbsp; &nbsp; var diaSemana = [
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; null, 'Lunes', 'Martes', 'Miércoles',
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 'Jueves', 'Viernes', 'Sábado', 'Domingo'
&nbsp; &nbsp; &nbsp; &nbsp; ];
&nbsp; &nbsp; &nbsp; &nbsp;

&nbsp; &nbsp; &nbsp; &nbsp; function gDay ()

&nbsp; &nbsp; &nbsp; &nbsp; {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; var date = new Date(
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; parseInt(prompt("Introducir día del mes (01-31).")),
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; parseInt(prompt("Introducir mes (01-12).")),
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; parseInt(prompt("Introducir el año."))
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; );&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //return diaSemana[date.getDay()];

&nbsp; &nbsp; &nbsp; &nbsp; }

&nbsp; &nbsp; //]]>

&nbsp; &nbsp; < /script>

< /head>

< body>
&nbsp; &nbsp; < a href="javascript: alert(gDay());">asd< /a>

< /body>

< /html>