Phone Call Date

I have configured a user script to run on save that creates a phone call for follow up.  I am trying to schedule the date of the phone call 1 day after the save of the transactions.  I cannot figure out how to do this.  Any help would be appreciated.  I have included my script below.

function phoneCreator(type)
{
var currentRecord;
var recordCreated;
var salesrep;
var customer;
var tranNum;
// create Phone Call only when a new transaction is created
if ( type == 'create' )
{
// Get the Current Record
currentRecord = nlapiGetNewRecord();
// Get the Sales Rep on transaction.
salesrep = currentRecord.getFieldValue('salesrep');
// Get the Customer from the opportunity.