// JavaScript Document

var n_old = 0;
var n_old_2 = 0;
var slideon=0;
var intervalo;

if(current_imgid < (tempgallery.length - 2)){
	shortcut.add("Right",function() 
	{
		proxima();
		if(slideon = 1){
			slideShow();
		}
		verificaPageAvanca();
		//alert(current_imgid);
		//alert(tempgallery.length);
		
		
	});

}

shortcut.add("Left",function() 
{
	anterior();
	if(slideon = 1){
		slideShow();
	}
	verificaPageAnerior();
});


function mudaClasse(n){

	links = document.getElementsByTagName("a");
	for (var i=0;i<links.length;i++) {
		if(n_old != -1){
			if (links[i].rel.indexOf("galeria_link_"+n_old) != -1) {
				links[i].className = "fotoThumb";	
			}
			
			if(n_old_2 != -1){
				if (links[i].rel.indexOf("galeria_link_"+n_old_2) != -1) {
					links[i].className = "fotoThumb";	
				}
			}
		}
	}
	n_old = n;
	n_old_2 = n;
	
	if(n == 0)
	window.document.getElementById('galeria_btn_voltar').style.display = "none";
	
	if(n != 0)
	window.document.getElementById('galeria_btn_voltar').style.display = "";
	
	if(n == (tempgallery.length - 1))
	window.document.getElementById('galeria_btn_avancar').style.display = "none";
	
	if(n < (tempgallery.length - 1))
	window.document.getElementById('galeria_btn_avancar').style.display = "";
	

}  

function proxima(){

	if(n_old_2 == 0){
		current_imgid = 0;
	}else{
		current_imgid = n_old_2;
	}

	links = document.getElementsByTagName("a");
	for (var i=0;i<links.length;i++) {
		if(n_old != -1){
			if (links[i].rel.indexOf("galeria_link_"+n_old_2) != -1) {
				links[i].className = "fotoThumb";	
			}
			
			if (links[i].rel.indexOf("galeria_link_"+(current_imgid+1)) != -1) {
				//alert(links[i].rel);
				
				links[i].className = "fotoThumbAtual";
				break;
				
				/*if((links[i].rel.indexOf("galeria_link_10")) && (current_imgid == 0)){
					//links[10].className = "fotoThumb";
					alert(links[10].rel);
				}*/	
			}
		}
	}

	n_old_2 = current_imgid+1;

	nextimage(current_imgid);
	

}

function anterior(){


	if(n_old_2 == 0){
		current_imgid = 0;
	}

	links = document.getElementsByTagName("a");
	for (var i=0;i<links.length;i++) {
		if(n_old != -1){
			if (links[i].rel.indexOf("galeria_link_"+n_old_2) != -1) {
				links[i].className = "fotoThumb";	
			}
			
			if (links[i].rel.indexOf("galeria_link_"+(current_imgid-1)) != -1) {
				links[i].className = "fotoThumbAtual";	
			}
		}
	}

	n_old_2 = current_imgid-1;

	previmage(current_imgid);
	

}


function verificaPageAnerior(){

	window.document.getElementById('galeria_btn_avancar').style.display = ""; 
	
	if(current_imgid == 1){
		window.document.getElementById('galeria_btn_voltar').style.display = "none";
	}		

}

function verificaPageAvanca(){
	//alert("tempgallery = "+tempgallery.length+"\n current_imgid = "+current_imgid);
	window.document.getElementById('galeria_btn_voltar').style.display = ""; 
	
	if(current_imgid == (tempgallery.length - 2)){
		window.document.getElementById('galeria_btn_avancar').style.display = "none";
	}

}



function slideShow(){
	
	if(slideon == 0){
		document.getElementById('imgSlide').src ="imagens/galeria_btn_slideshow2.gif";
		intervalo = window.setInterval(function() { proxima()}, 5000);
		slideon = 1;
	}else{
		document.getElementById('imgSlide').src ="imagens/galeria_btn_slideshow.gif";
		clearInterval(intervalo);
		slideon = 0;
	}
	
	
}