var PromoBox;
var PromoTID;

function SwitchPromoFrom(id) {
	if(document.getElementById("main_promo_img1")) {
		PromoTID = (document.getElementById("main_promo_img" + (id + 1))) ? (id + 1) : 1;
		
		var i = 1;

		while(document.getElementById("main_promo_img" + i)) {
			document.getElementById("main_promo_button" + i).className = "";
			
			i++;
		}
		
		Effect.Fade("main_promo_img" + id);
		Effect.Appear("main_promo_img" + PromoTID);
		
		document.getElementById("main_promo_button" + PromoTID).className = "active";
		
		PromoBox = setTimeout("SwitchPromoFrom(PromoTID)", 5000);
	}
}

function SelectPromo(id) {
	StopPromo();
	
	PromoTID = (document.getElementById("main_promo_img" + (id + 1))) ? (id + 1) : 1;
	
	var i = 1;

	while(document.getElementById("main_promo_img" + i)) {
		if(i != id) {
			Effect.Fade("main_promo_img" + i);
		}
		
		document.getElementById("main_promo_button" + i).className = "";
		
		i++;
	}
	
	Effect.Appear("main_promo_img" + id);
	
	document.getElementById("main_promo_button" + id).className = "active";
}

function StartPromo(id) {
	if(!PromoBox) {
		PromoTID = id;
		
		PromoBox = setTimeout("SwitchPromoFrom(PromoTID)", 5000);
	}
}

function StopPromo() {
	clearTimeout(PromoBox);
	
	PromoBox = false;
}