D = new Date();
yy = D.getYear();
mt = D.getMonth();
dd = D.getDate();
if (yy <= 9) { yy = "200" + yy }
else if (yy <= 98) { yy = "20" + yy }
else if (yy <= 99) { yy = "19" + yy }
else if (yy <= 999) { yy = yy + 1900 }
yy = yy - 2000
mt2 = mt + 1;
if (mt2 <= 9) { mt2 = "0" + mt2 }
if (dd <= 9) { dd2 = "0" + dd } else { dd2 = dd }
var ttl = "ssd" + yy + mt2 + dd2 + ".jpg";
var fldr = mt - 3 ;
if (yy > 0) {fldr =  fldr + (12 * (yy - 1)) }
if (fldr <= 9) { fldr = "0" + fldr } 
dd3 = dd - 1;
if (dd3 <= 9) { dd3 = "0" + dd3 }
if (dd <= 1) { dd3 = dd2 }
var daily = "../pg" + yy + mt2 + "/ssd" + yy + mt2 + dd2 + ".jpg";
var ontem = "../pg" + yy + mt2 + "/ssd" + yy + mt2 + dd3 + ".jpg";