var transicionsBanner = null;
var numBanners = 0;
var selectedTrans = 0;
function trans_banner(i)
{
	// S'ha clickat a una bola per canviar de banner
	if(!transicionsBanner) return;
	if(selectedTrans == i) return;

	// Retardem les transicions automàtiques a 15 segons
	transicionsBanner.setIntervalTime(15000);

	// Saltem a la transició
	transicionsBanner.jump(i);
}
function selectBullet(i)
{
	if(numBanners == 0) return;
	var obj;
	var currentBulletIndex = selectedTrans;
	var nextBulletIndex = typeof(i)!="undefined" ? i : (selectedTrans+1)%numBanners;
	if(obj = document.getElementById("bullet"+currentBulletIndex)) obj.src = "imgs/bullet.png";
	if(obj = document.getElementById("bullet"+nextBulletIndex)) obj.src = "imgs/bullet-select.png";
	selectedTrans = nextBulletIndex;
}


// Inicialitza les transicions del banner
var b_inicialitzaAnimacionsBanner = false;
function inicialitzaAnimacionsBanner()
{
	if(b_inicialitzaAnimacionsBanner) return;
	b_inicialitzaAnimacionsBanner = true;
	var i=0;
	while(document.getElementById("bullet"+i)){
		numBanners++;
		i++;
	}

	if(numBanners > 0)
	{
		$('.fr_slide').show();
		if(numBanners > 1)
		{
			transicionsBanner = new Blockster({
				holder: '#slidesHolder',
				rows: 1,
				cols: 1,
				animType: "fade",		// (fade) fase, simple
				blockAnimSpeed: 50, 	// (50) the number of miliseconds between each block appearing/fading in
				pause:3000,				// (3500) the number of miliseconds to wait (i.e. show the slides) between transitions
				random: false
			});
			transicionsBanner.callbackSelBullet = selectBullet;
		}
	}
}