//muda o nš na string do nome do arquivo							 
var trocaSrcNome = function (img,numPic) {
	var oldStr = img.src;
	var newStr = oldStr.substring(0, (oldStr.lastIndexOf('.') -1 ));
	var newStrEXT = oldStr.substring(oldStr.lastIndexOf('.'));
	if (/\d/.test(newStr.charAt(newStr.length - 1))) newStr = newStr.substring(0, (newStr.length - 1));
	var newStrNum = parseInt(oldStr.substring(newStr.length , oldStr.lastIndexOf('.')));
	if (numPic) { 
		return newStrNum < numPic ? newStr + (newStrNum + 1) + newStrEXT : newStr + '1' + newStrEXT;
	}
	return newStrNum <= 4 ? newStr + (newStrNum + 2) + newStrEXT : newStr + (newStrNum - 4) + newStrEXT;
};

var fadeOut = function() { 
	this.get('tween', {property: 'opacity', duration: 700}).start(0) 
};

var trocaImg = function(classe, settime, numImgs) {
		var vClasse = classe,
			newImgs = [],
			numImgs = numImgs;
	function imgSwitch () {
		var oldImgs = newImgs.length <= 0 ? $$('[.' + vClasse + ']') : newImgs,
			paiImgs,
			novaImg;
		newImgs = [];
		for (var i=0;i < oldImgs.length; i++) {
			
			paiImgs = oldImgs[i].parentNode.getElementsByTagName('IMG');
			if(paiImgs.length > 1) {
				paiImgs[0].dispose();
			}			
			novaImg = oldImgs[i].cloneNode(false);	
			oldImgs[i].setStyles({
				zIndex : 10,
				opacity : 1
			});
			
			novaImg.src = trocaSrcNome(oldImgs[i],numImgs);
			novaImg.setStyles({
				position: 'absolute',
				zIndex : 1
			});
			oldImgs[i].parentNode.appendChild(novaImg);
			fadeOut.delay(((i + 1) * 400) + 2000 , oldImgs[i]);
			newImgs.push(oldImgs[i].parentNode.getElementsByTagName('IMG')[1]);
		}
		window.setTimeout(imgSwitch, settime);
	}
	window.setTimeout(imgSwitch, settime);	
}

/*	
	if($("manha_tarde")) {
		var imgs = $("manha_tarde").getElements('img');
		var imgAntes = $$('#manha_tarde li img:last-child');	
		
		imgs.setStyle('cursor','pointer');
		imgAntes.addEvents({
			mouseenter : function() {
			this.fade('out')
			}, 
			mouseleave : function(){	
			this.fade('in')
			}
		})
	}
*/	
window.addEvent('domready', function() {
	if(!$("galeria")) {
		trocaImg('foto_menu',4500);
	}
	if($('manha_tarde')) {
		trocaImg('bocas',3000,16);
	}
});