var x = new Date (document.lastModified);
Modif = new Date(x.toGMTString());

DateMod = getString(Modif);

function getString(theDate)
{
	x = theDate.getYear();
	var y = x % 100;
	y += (y < 38) ? 2000 : 1900;
	z = theDate.getDate();
	m = theDate.getMonth() + 1;
	datemod = z +'-'+  m + '-' + y;
	return datemod;
}
document.write("<p class='lastmod'>this document was last modified: "+DateMod+"</p>");