_fotoSelecionada=false;
_slideShow=false;
_slideShowTempo=5000;
_slideShowLoop=false;
function seguirLink(l){
	window.open(l.href, l.target);
}
function selecionarFoto(obj){
	this.frames.banner.location.reload();
	_fotoSelecionada=obj;
	alternarSlideShow(false);
}
function navegar(dir){
	this.frames.banner.location.reload();
	var lnks=document.getElementById("thumbs").getElementsByTagName("a");
	for(var i=0; i<lnks.length; i++){
		if(lnks[i]==_fotoSelecionada){
			var n=i;
			break;
		}
	}
	n=n || 0;
	n+=dir;
	if(n<0 || n>=lnks.length){
		if(_slideShow && !_slideShowLoop){
			alternarSlideShow(false);
			return;
		}else if(_slideShowLoop){
			n=(n<0)? lnks.length-1 : 0;
		}else{
			return;
		}
	}
	seguirLink(lnks[n]);
	_fotoSelecionada=lnks[n];
	return;
}
function proxima(){
	navegar(1);	
}
function passoSlideShow(){
	if(_slideShow){
		_timeoutSlideShow=setTimeout(proxima, _slideShowTempo);
	}
}
function alternarSlideShow(st){	
	_slideShow=(st!==undefined)? st : !_slideShow;
	try{
		clearTimeout(_timeoutSlideShow);
	}catch(e){}
	if(_slideShow){
		passoSlideShow();
		document.imgSlideShow.src="http://img.terra.com.br/not/bt_stopslide.gif";
	}else{
		document.imgSlideShow.src="http://img.terra.com.br/not/bt_startslide.gif";
	}
}
/*
function reloadBanner(){
	this.frames.banner.location.reload();
}
*/
function acharPosicao(){
	var lnks=document.getElementById("thumbs").getElementsByTagName("a");
	if(!_fotoSelecionada){
		_fotoSelecionada=lnks[0];
	}
	if(!_slideShowLoop){
		document.getElementById("btAnterior").style.display=(_fotoSelecionada==lnks[0])? "none" : "block";
		document.getElementById("btProxima").style.display=(_fotoSelecionada==lnks[lnks.length-1])? "none" : "block";
	}
}
function iniciar(){
	var lnks=document.getElementById("thumbs").getElementsByTagName("a");
	seguirLink(lnks[0]);
}