- (void)startAnimation
{
	NSThread* timerThread = [[NSThread alloc] initWithTarget:self selector:@selector(startAnimationThread) object:nil]; //Create a new thread
	[timerThread start]; //start the thread
}

//the thread starts by sending this message
-(void) startAnimationThread
{
	NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
	NSRunLoop* runLoop = [NSRunLoop currentRunLoop];
	[[NSTimer scheduledTimerWithTimeInterval: animationInterval
	target: self
	selector: @selector(drawView)
	userInfo: nil
	repeats: YES] retain];

	[runLoop run];
	[pool release];
}