function lastMod() {
   		var x = new Date (document.lastModified);
   		Modif = new Date(x.toGMTString());
   		Year = takeYear(Modif);
   		Month = Modif.getMonth();
   		Day = Modif.getDate();
   		Mod = (Date.UTC(Year,Month,Day,0,0,0))/86400000;
   		x = new Date();
   		today = new Date(x.toGMTString());
   		Year2 = takeYear(today);
   		Month2 = today.getMonth();
   		Day2 = today.getDate();
   		now = (Date.UTC(Year2,Month2,Day2,0,0,0))/86400000;
   		daysago = now - Mod;
   		if (daysago < 0) return '';
   		unit = 'days';
   		if (daysago > 730) 	{
   		daysago = Math.floor(daysago/365);
   		unit = 'years';
   	}
   	else if (daysago > 60) {
   		daysago = Math.floor(daysago/30);
   		unit = 'months';
   	}
   	else if (daysago > 14) {
   		daysago = Math.floor(daysago/7);
   		unit = 'weeks'
   	}
   	var towrite = ' ';
   	if (daysago == 0) towrite += 'today.';
   	else if (daysago == 1) towrite += 'yesterday.';
   	else towrite += daysago + ' ' + unit + ' ago.';
   	return towrite;
   }


   function takeYear(theDate) {
   	x = theDate.getYear();
   	var y = x % 100;
   	y += (y < 38) ? 2000 : 1900;
   	return y;
   }