Applescript Question - Mount Drive if NAS is available

Hi,

I am not an Applescripter and I would like some assistance trying to mount my drive without getting the error dialogue box that the drive is not available.

I have a NAS on my network and when I restart the NAS it takes a few minutes for it to be available. During that time I have an AppleScript that tries to run to connect a network shared drive, but when it can't see the NAS it throws an error that I have to click 'ok' on before it will continue to check. My script works fine for mounting but I need help in figuring out how to mount the drive once the NAS is available so I can avoid the error message. Here's some info:

> The NAS is IP address 192.168.2.181.
> The network share I am trying to mount is at 192.168.1.181/fileserver.
> I am using Hazel by Noodlesoft to run this code.

So basically,

If this condition is met
:
if [ -d "/Volumes/fileserver" ]; then exit 1; else exit 0; fi

The go the following:

Here is my script that mounts the drive:

tell application "Finder"
	if not (disk "fileserver" exists) then
		mount volume "afp://192.168.2.181/fileserver"
	end if
end tell

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Can I do something like ping the network drive to see if it's available and if it is mount? Not sure exactly how to accomplish this.

Any advice?