AppleScript - Needed a simple way to simple unmount all the SMB mounted drives

unmountSmbDrives.scpt

##################################################################
#                                                                #
#		 First basic script to unmount smb shares                    #
#                                                                #
#	  Feature:                                                     #
#        Will only umount non busy filesystems                   #
#                                                                #
##################################################################

property myDisks : {"/Volumes/Gigantor", "/Volumes/ExtraMovies", "/Volumes/StorageDisk", "/Volumes/Music_Compressed", "/Volumes/My_Book", "/Volumes/Music", "/Volumes/MoreMovieS", "/Volumes/Blank", "/Volumes/MacOsX_SoftWare", "/Volumes/miniStorage", "/Volumes/Movies", "/Volumes/My_Book_2", "/Volumes/XtraLarge"}

-- check to see that drives are mounted first shouldnt run if count is 0
set numSmbVolumes to (do shell script "mount | grep smb | cut -d ' ' -f3 | wc -l | sed -e 's/^[ \t]*//'")

-- if there are no smb mounted volumes exit
if numSmbVolumes = "0" then
	display dialog "No SMB Volumes are mounted!" with title "ERROR" buttons {"OK"} default button 1
	return
end if

-- this means that there some smb drives mounted that will now be unmounted
set mounts to {}
set mounts to paragraphs of (do shell script "mount | grep smb | cut -d ' ' -f3")

repeat with mount in mounts
	if mount is in myDisks then
		try
      -- using diskutil as unix umount needs sudo and eject well just didnt work right
      -- using the added option of force, will unmount filesystems that are busy, (corrupt files)
			do shell script "diskutil umount " & mount
		on error
			display dialog "Cannot unmount " & mount & " filesystem busy!." with title "ERROR" buttons {"OK"} default button 1
			return 0
		end try
	end if
end repeat

-- Give a final message that the umount of smb shares is done
display dialog "All SMB mounts have been ejected." with title "Success!" buttons {"OK"} default button 1
return