var heute    = new Date();
var datum    = new Date(2012, 7, 12, 12);
var sekunden = datum.getTime() - heute.getTime();
var tage     = Math.floor(sekunden / (1000 * 60 * 60 * 24));
document.write("<font color=#ffffff><font size=+2>"+tage+"<\/font><\/font>")