Hi!

This should work (untested)

Code:
BMAP* visor_bmp = "visor_grain_1.pcx";

PANEL* visor_grain =
{
	pos_x = 0;
	pos_y = 0;
	layer = 3;
	bmap= visor_bmp;
	flags = OVERLAY;

}

function grain_startup();
{
	while(1)
	{
		set (visor_grain, SHOW); // makes it visible
		wait(-2); //wait one second
		reset (visor_grain, SHOW); // makes it invisible
		wait(-2);
		set (visor_grain, SHOW); // makes it visible
	}
}



Hope this helps!
Ottawa laugh

Ver 7.86.2 Pro and Lite-C