// abre um popup
function abrir(d, w, h)
{
	if (d != "emissao.php")
		scrols = ",scrollbars";
	else
		scrols = "";

	var s1 = (screen.height/2)-(h/2);
	var s2 = (screen.width/2)-(w/2);
	var s3 = "width=" + w + ",height=" + h + ",top=" + s1 + ",left=" + s2 + "" + scrols;
	window.open(d,'',s3);
}
// abre o popup da votação
function abrirVotacao(f)
{
	var form = document.forms[0];
	var w = 450;
	var h = 250;
	var l = (screen.width/2)-(w/2);
	var t = (screen.height/2)-(h/2);
	var d = "width=" + w + ",height=" + h + ",top=" + t + ",left=" + l + ",status=0";

	if (f == "ver_votos.php") {
		var d = "width=" + w + ",height=160,top=" + t + ",left=" + l + ",status=0";
		window.open(f,'',d);
	}
	else {
		for (var i = 0; i < document.forms['form_votar'].opcoes.length; i++)
			if (document.forms['form_votar'].opcoes[i].checked) {
				var c = -1;
				break;
			}

		if (c == -1) {
			var u = "votar.php?i=" + document.forms['form_votar'].opcoes[i].value;
			window.open(u,'',d);
		}
		else {
			alert("tem de escolher uma opcão");
		}
	}
}