var vig_changing = false;
var vig_len = vig_slides.length;
var vig_i = 0;
var vig_dur = .65;

function VigSwitch(dir){
	if(vig_changing == false){
		vig_changing = true;
		Effect.Fade(vig_slides[vig_i], { duration:vig_dur, from:1.0, to:0.0 });
		
		if(dir == 'f'){
			vig_i++;
			if (vig_i == vig_len) vig_i = 0;
		} else {
			vig_i--;
			if (vig_i < 0) vig_i = vig_len -1;
		}
		
		Effect.Appear(vig_slides[vig_i], { 
				duration:vig_dur, 
				from:0.0, 
				to:1.0, 
				afterFinish: 
						function() { vig_changing = false; } 
		});
	}
	return false;
}

//setTimeout('VigSwitch()',3000);