function inc(){return 58}
function $(id){return document.getElementById(id)}
function left(id){return $(id).style.left}
function subtrai(a,b){return parseFloat(a) - parseFloat(b)}
function soma(a,b){return parseFloat(a) + parseFloat(b)}
function selecionaP(){var $as = $('thumbgall').getElementsByTagName('a');abrefoto($as[0])}
function setclasse(o,classe){return o.className=classe;}
function abrefoto(foto){
	$('pict').innerHTML = "<img src='"+foto.href+"' />";
	$title = foto.title.split("|");
	$('titulo').innerHTML = $title[0];
	$('deta').innerHTML = "";
	if($title[1]){$('deta').innerHTML = $title[1];}
	var $as = $('thumbgall').getElementsByTagName('a');
	for ($i=0;$i<$as.length;$i++){
		if($as[$i] == foto)
			setclasse($as[$i],"active");
		else
			setclasse($as[$i],"");
		
	}
	return false;

}
function avancaThumb(){
	var $inicio = left('thumbgall');
	var $lgal = $('thumbgall').offsetWidth;
	var $lthu = $('thumbs').offsetWidth;
	var $diff = subtrai($lgal,$lthu);
	if($inicio ==""){$inicio = 0}
	if($diff > 0){
		var $roda = soma($inicio,$diff);
		if($roda > 0){
			var $pos = subtrai($inicio,inc());
			$('thumbgall').style.left = $pos + "px";
		}
	}
}
function retrocedeThumb(){
	var inicio = left('thumbgall');
	if(inicio !=""){
		if(inicio != "0px"){
			var pos = soma(inicio,inc());
			$('thumbgall').style.left = pos + "px";
		}
	}
}

function avancaImage(){
	var $as = $('thumbgall').getElementsByTagName('a');
	var $flag = 0;
	for ($i=0;$i<$as.length;$i++){
		if($as[$i].className == "active"){
			setclasse($i,"");
			$position = $i+1;
			var $flag = 1;
			if($position == $as.length){
				setclasse($as[0],"active");
				abrefoto($as[0]);
				$flag = 2;
			}
		}else if($flag == 1){
			setclasse($as[$i],"active");
			abrefoto($as[$i]);
			$flag = 2;
		}
	}
	return false;
}

function retrocedeImage(){
	var $as = $('thumbgall').getElementsByTagName('a');
	var $flag = 0;
	for ($i=0;$i<$as.length;$i++){
		if($as[$i].className == "active"){
			setclasse($as[$i],"");
			$position = $i;
			var $flag = 1;
			if($position == 0){
				setclasse($as.length-1,"active");
				abrefoto($as[$as.length-1]);
				$flag = 1;
			}
			if($position+1 == $as.length){
				$as[$as.length-2].className = "active";
				setclasse($as[$as.length-2],"active");
				abrefoto($as[$as.length-2]);
				$flag = 1;
			}
		}else if($flag == 1){
			setclasse($as[$i-2],"active");
			abrefoto($as[$i-2]);
			$flag = 2;
		}
	}
	return false;
}