function showhelp(nazwa) {
	w=300;
	h=400;
	x=screen.width-w;
	y=0;
	prefs="width="+w+",height="+h+",screenX="+x+",screenY="+y+",scrollbars=yes,alwaysRaised=yes";
	window.open("help/"+nazwa+".html","neptun_help",prefs);
}