Problems mounting volumes without dialogue

Question

I'm trying to cobble together a script that will mount a network volume that I want to use for unattended scheduled backups, and I've run into a hitch I can't seem to get around....
I want the script to use the Keychain entry for the server in question, so that I don't have to encode usernames or passwords into it. However, I also want it to be able to mount the volume without bringing up the "Select which volumes you wish to mount" dialogue every time it gets run
Here is my script (courtesy of a number of other submitters here)
set server_name to "MyServerName" -- change this to the server name listed in Keychain Access for the server entry you want to use
tell application "Keychain Scripting" to launch
set _processes to ""
repeat until _processes contains "Keychain Scripting" -- this repeat is to work around a known bug
tell application "System Events" to set _processes to name of processes
delay 1 -- this makes sure "Keychain Scripting" is running
end repeat
tell application "Keychain Scripting"
set key_count to count of keys of current keychain
repeat with i from 1 to key_count
try
if protocol of key i of current keychain is AFP and server of key i of current keychain is server_name then
set _password to password of key i of current keychain
set _username to account of key i of current keychain
set _address to address of key i of current keychain
set _volume to volume of key i of current keychain
exit repeat
end if
end try
end repeat
end tell
set intad to "afp://" & _address & "/" & _volume
tell application "Keychain Access"
mount volume intad as user name _username with password _password
end tell
The PROBLEM is, if I run this script using the password provided by Keychain Access, the "Select which volumes you wish to mount" dialogue appears and waits for me to hit OK (not very good if this is supposed to be unattended). If I instead put the password directly into the file (set _password to "blah", for example), the volume mounts without that dialogue BUT my password lives in the file... Not very desirable, especially if I want to give this script out as an application to other users who want to do the same thing..... Does anyone know any ways around this?

Answer 1

Whoo HOOO, I solved it!!!
Or at least worked around it.... thanks again to you wonderful posters on this forum!!
I inserted a
tell application "System Events" to keystroke return
step JUST BEFORE issuing the
mount volume intad as user name _username with password _password
step in my script.... The dialogue comes up, then disappears....
YAY!
If anyone else has any suggestions, I'm open to them!!!