/*
   Shows help.
 */
function showHelp(context) {
	width = 400;
	height = 480;
	x = screen.width;
	y = screen.height;
	x -= width;
	y -= height;

	help = window.open(context, 'help', 
		'top=' + y + ', left=' + x + ',' +
		'width=' + width + ', height=' + height + ', resizable=1, scrollbars=1');
	help.focus();
}