/*
 *		Le Provencal Beach - Pannel apparition Credits Accueil
 *									
 *		Copyright Alliance cube 2009
 */

var creditOpac = 100;

// Fonction de hide des fenêtres à l'arrivée
function HideStart() {
	changeOpac(0, 'credits');
	creditOpac = 0;
}

// Changement d'opacité du panneau credit
function SwitchOpacCredits() {
	if(creditOpac == 100) {
		opacity('credits', 100, 0, 300);
		creditOpac = 0;
	}else {
		opacity('credits', 0, 100, 300);
		creditOpac = 100;
	}
}

// Fonction de vérification avant opacité
function opacity(id, opacStart, opacEnd, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;

	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}

// Fondu en alpha
function changeOpac(opacity, id) {
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
	object.display = "block";
	object.visibility = "visible";
	if(opacity == 0) {
		object.display = "none";
		object.visibility = "hidden";
	}
}