function $id(id){
	return document.getElementById(id);
}


//AMPLIAR FOTO!
	var i_arruma_fundo;
	
	function amplia_foto(foto){
		i_arruma_fundo = window.clearInterval(i_arruma_fundo);
		$id('galeria_fundo').style.height = "10px";
		$id('galeria_fundo').style.height = getHeight() + "px";
		$id('galeria_fundo').style.display = "block";
		$id('galeria_amplia_window').style.display = "block";		
		
		for(var cont = 0; cont <= array_fotos.length -1; cont++){
			if(array_fotos[cont][0] == foto){
				var desc = array_fotos[cont][1];
				var grava_cont = cont;
			}
		}
		
		if(grava_cont + 1 <= array_fotos.length -1){
			cont_p = array_fotos[grava_cont + 1][0];
		}else{
			cont_p = "";
		}
		
		if(grava_cont - 1 >= 0 ){
			cont_a = array_fotos[grava_cont - 1][0];
		}else{
			cont_a = "";
		}
		
		var image = "foto_gal/img_resize.php?img=" + foto + "&scale=650&a=1";
		$id('galeria_amplia_window').innerHTML = '<a name="a_amp"></a><img src="' + image + '" style="min-height:50px;" /><div id="desc">' + desc + '</div><a href="javascript:amplia_foto_back()"><div id="amp_btc" style="cursor:pointer;">FECHAR</div></a><div id="amp_btl" style="cursor:pointer;"><a onclick="amplia_foto(\'' + cont_a + '\');" href="#a_amp"><img src="foto_gal/left_arrow.png" /></a></div><div id="amp_btr" style="cursor:pointer;"><a onclick="amplia_foto(\'' + cont_p + '\');" href="#a_amp"><img src="foto_gal/right_arrow.png" /></a></div></div>';
		
		if(grava_cont + 1 > array_fotos.length -1){
			$id('amp_btr').innerHTML = "";
		}
		
		if(grava_cont - 1 < 0 ){
			$id('amp_btl').innerHTML = "";
		}
		
		i_arruma_fundo = setInterval(arruma_fundo, 1000);
	}
	
	function amplia_foto_back(){
		i_arruma_fundo = window.clearInterval(i_arruma_fundo);
		$id('galeria_fundo').style.display = "none";
		$id('galeria_amplia_window').style.display = "none";
	}
	
	function mostra_bt_amp(){
		$id('amp_btr').style.display = $id('amp_btl').style.display = $id('amp_btc').style.display = "block";
	}
	
	function esconde_bt_amp(){
		$id('amp_btr').style.display = $id('amp_btl').style.display = $id('amp_btc').style.display = "none";
	}
	
	function arruma_fundo(){
		$id('galeria_fundo').style.height = "10px";
		$id('galeria_fundo').style.height = getHeight() + "px";
		$id('galeria_fundo').style.display = "block";
	}
	
	
//Pega Heigth
function getHeight(){
	var body = document.body;
	var innerHeight = (self.innerHeight != 'undefined')&&!isNaN(self.innerHeight)?self.innerHeight:0;
	if (!document.compatMode || document.compatMode=="CSS1Compat") {
		return Math.max(body.offsetHeight,
		document.documentElement.clientHeight,
		document.documentElement.scrollHeight, innerHeight);
	}
	return Math.max(body.scrollHeight, body.clientHeight, innerHeight);
}