Rman question

Hi.
I have an Rman script that backup only the archives.
I want to know how to delete inside the script because of this message:

122448  1    15007   X 22-NOV-10 E:\ORADATA\OEM10G\ARCHIVE\ARC15007_0604077610.001
	
	
122449  1    15008   X 22-NOV-10 E:\ORADATA\OEM10G\ARCHIVE\ARC15008_0604077610.001
	
	

Do you really want to delete the above objects (enter YES or NO)? 
	
	
Error occurred getting response - assuming NO response
	
	

 The script is the following:
RMAN> print script backup_archives;

printing stored script: backup_archives
 {ALLOCATE CHANNEL dev1 DEVICE TYPE DISK FORMAT 'c:\arc_temp\AL_%d_%U_%p';
crosscheck archivelog all;
delete expired archivelog all;
backup archivelog all skip inaccessible delete input;