var d = new Date();
dom = d.getDate();
month = d.getMonth() + 1;
year = d.getYear();
if (year < 2000) year = year - 100;
else year = year - 2000;

if (year == 9 && month == 8) 
    days = 19 + (31 - dom);
	else if (year == 9 && month == 9 && dom < 19)
	    days = 19 - dom;
		else
	          days = 0;
		    if (days < 10)
			 days = '0' + days.toString();

		document.write('<div align="center"><a href="http://softwarefreedomday.org/teams/centralandsouthamerica/Nicaragua"><img id="cuenta_atras" src="http://www.linuxtour.org/ContadorSFD09/SFD-'+days+'.png" border="0" alt="SFD Nicaragua 2009"></a></div>');