add sub dates in cordys

function addSubDate(anchorDate,offsetValue)
{
var abc=anchorDate.split("T");
var xyz=abc[0].split("-");
var pqr=xyz[1]+"/"+xyz[2]+"/"+xyz[0];
var d = new Date(pqr);
d.setDate(d.getDate()+Number(offsetValue));
var fullDate=d.getDate()+"/"+(d.getMonth()+1)+"/"+d.getYear();
return fullDate;

}