Add save dialog which is the confirm with an additional save button adde...

Usage:

     Alertify.set({
        buttonFocus: "save",
        labels: {
          ok: "Yes",
          cancel: "No",
          save: "Save"
        }
      });

      Alertify.save("Your changes have not been saved. Are you sure you want to continue?", function(e, btn) {
        switch (btn) {
        case 'save':
//Do save operation here
          break;
        default:
          if (e) { 
//ok, navigate w/o saving
          }
        }
      });