now = new Date();				// now = today's date
xmaseve = new Date("Dec 26 00:00:00 2000");     // xmaseve = date of xmas eve 2000
year = now.getFullYear();			// year = this year
xmaseve.setFullYear(year);			// change xmas eve to this year
seconds = (xmaseve - now) / 1000;		//
days = seconds / 60 / 60 / 24;			// calculate days to Christmas
days = Math.floor(days);			// 
document.write("There are " + days + " shopping days to Christmas.");