Script on Weekly Time entry form

Hi,

I have  a client script to populate a field on timeentry form which works when a timeentry is made on daily basis.
I modified the script such a way that the script should populate the field even if the time entry is made on a weekly basis.But the script is giving an unexpected error.
Is there something wrong in the following script?
Any help is appreciated.

Thanks,
Iby

 function onSave()  {       weekly_time_count = nlapiGetLineItemCount('timeitem');      if(weekly_time_count < 1)           return true;      for (var i = 1 ; i<= weekly_time_count ; i++ ) {                jc_job_labor_cost_method = nlapiGetLineItemValue('timeitem','custcol_jc_job_labor_cost_method', i);          jc_so_labor_cost_method = nlapiGetLineItemValue('timeitem','custcol_jc_so_labor_cost_method', i);          employee_type = nlapiGetLineItemValue('timeitem','custcol_jc_employee_type', i);                    //alert(employee_type);          jc_so_time_cost = 33;              nlapiSetLineItemValue('timeitem','custcol_jc_so_time_cost', jc_so_time_cost ,i);      }          return true;  }