I am trying to add a variable number of days to a date field.  Here is my script:    var v_NewDate = new Date();  v_NewDate.setDate(v_NewDate.getDate() + v_LeadTime);   If I use todays date (April 9, 2015), and v_LeadTime = 10, I receive the value "Tue Sep 26 2017 13:36:25 GMT-0500 (Central Daylight Time)".   Can someone explain what I am doing wrong?   Thanks