var orbits = new Array( 'GroupReaction1_Trigger',
				'GroupReaction2_Trigger',
				'GroupReaction3_Trigger',
				'GroupReaction4_Trigger',
				'GroupReaction5_Trigger',
				'GroupReaction6_Trigger',
				'GroupReaction7_Trigger',
				'GroupReaction8_Trigger' );
var cursor = 0;
function orbit(dir) {
	if (dir) {
		if (cursor == 7) {
			cursor = 0;
		} else {
			cursor++;
		}
	} else {
		if (cursor == 0) {
			cursor = 7;
		} else {
			cursor--;
		}
	}
	window.top.SetWebParam(orbits[cursor], 1);
}