Save Button Doesn't Save

I am trying to add some custom client side code to the save button, however, when I do, the save function no longer works.

The function I am using is below.  When I referance that function in the "Save Record Function" the code works fine but the record doesn't save afterwards.  What do I need to add at the end to get the case to save.

function SaveCase()
{
//If the Case Status is Closed
if (nlapiGetFieldText('Status') == "Closed")
  {
//  Then Set the Followup Time to 09:00
  nlapiSetFieldText('custevent30', "09:00")
  }
}