Ubuntu :: Function With Closing Only Applicable Gnome-terminal?

I wrote this little function that I use from my '~/.bashrc' (from a script I also made, with help) to run a program on a timer, however there is one small issue I'm having.

Code:
##### Run program on a timer
# Usage: program-timer <program> <runlength (in secs)>
function program-timer()
{
$1 &
mypid=`eval ps ax|grep "$1"|grep -iv "grep"| awk '{print $1}'`

[Code]...

Basically, it works just fine, but the issue I'd love to get help with is when the timer runs out, it doesn't shutdown the program. That is, not until I close gnome-terminal. I've tried 'exit' in several places, but it doesn't seem to close it.

Now, the above script does what I want, but using 'killall gnome-terminal' not only closes the gnome-terminal window I am running the function on, but ALL gnome-terminal windows I may have open.

Does anybody see a simple way to fix my small dilemma, to have it close only the gnome-terminal window I'm running the function on?