function mostrarDiv() {
    document.getElementById("div_centro").style.display = 'block';
	//document.getElementById('setaEsq').style.visibility = 'hidden';
    
	document.getElementById('tela_sobreposta').style.display = '';
	document.getElementById('tela_sobreposta').style.position = 'absolute';
	document.getElementById('tela_sobreposta').style.width = '100%';
	//document.getElementById('tela_sobreposta').style.margin = '20px';
	document.getElementById('tela_sobreposta').style.height = '100%';
	//document.getElementById('tela_sobreposta').style.backgroundImage = 'url(imagens/tela_mascara.gif)';
	document.getElementById('tela_sobreposta').style.backgroundColor = '#1F1A17';
	document.getElementById('tela_sobreposta').style.zIndex = "2";

}

function escondeDiv() {

    document.getElementById("div_centro").style.display = 'none';
    document.getElementById("site").style.display = '';
	document.getElementById('tela_sobreposta').style.display = 'none';
	//document.getElementById('tela_sobreposta').style.position = 'absolute';
	//document.getElementById('tela_sobreposta').style.width = '100%';
	//document.getElementById('tela_sobreposta').style.height = '100%';
	//document.getElementById('tela_sobreposta').style.backgroundImage = 'url(imagens/tela_mascara.gif)';

}

/*
function esconderCoracao() {
    document.getElementById("heart").style.display = "none";
}

function aparecerCoracao() {
    window.setTimeout("showHeart();", 3000);
}

function showHeart() {
    document.getElementById("heart").style.display = "block";
}
*/

var m = 0;

function testar() {
	window.setInterval("esconder();",100);
}

function esconder() {
	if (m == 0) {
		document.getElementById('btEsq').style.visibility = "hidden";
	}
	else {
		document.getElementById('btEsq').style.visibility = "visible";
	}
} 

function scrollCardapio(elemento, tipo) {
    if (tipo == 'vai') {
        if (m == '0') {
            document.getElementById(elemento).style.left = '0';
			document.getElementById('btEsq').style.visibility = 'hidden';
        }
        else {
            document.getElementById(elemento).style.left = m = m + 450;
			document.getElementById('setaDir').style.visibility = 'visible';
		}
    }
    else if (tipo == 'volta') {
        if (m == '-4500') {
            document.getElementById(elemento).style.left = '-4500';
			document.getElementById('setaDir').style.visibility = 'hidden';
        }
        else {
            document.getElementById(elemento).style.left = m = m - 450;
			document.getElementById('btEsq').style.visibility = 'visible';
        }
    }
    //alert(document.getElementById(elemento).style.left);
}