var ns4 = (document.layers)? true:false
var ie4 = (document.all)? true:false

function popup(url,largura,altura) {
    window.open(url,'popup','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,menubar=no,width='+largura+',height='+altura);
}

function popupMax (url, nome, largura, altura, pos, barras) {
    if (pos == 0) {
        posleft = 20;
	postop  = (screen.height) ? (screen.height - altura) / 2 - 50 : 100;
    }

    else if (pos == 1) {
        posleft = (screen.width) ? (screen.width - largura) / 2 : 100;
	postop  = (screen.height) ? (screen.height - altura) / 2 - 50 : 100;
    }

    else if (pos == 2) {
	posleft = (screen.width) ? (screen.width - largura) - 28 : 100;
	postop  = (screen.height) ? (screen.height - altura) / 2 - 50 : 100;
    }
    if (barras == true) 
        opbarras = "yes"; 
    else
        opbarras = "no";

    settings = 'width=' + largura + ', height=' + altura + ', top=' + postop + ', left=' + posleft + ', scrollbars=' + opbarras + ', location=no, directories=no, status=no, menubar=no, toolbar=no, resizable=no';
    window.open(url, nome, settings);
}

function hide(id) {
    if (ns4) document.layers[id].visibility = "hide"
    else document.getElementById(id).style.display="none";
}

function show(id) {
    if (ns4) document.layers[id].visibility = "show"
    else document.getElementById(id).style.display="";
}

function redireciona (obj) {
    if (obj[obj.selectedIndex].value != "") {
	var url = obj[obj.selectedIndex].value;
	self.location = url;
    }
}

function escreve(id,txt) {
    if (ns4) {
        var lyr = document.layers[id].document
        lyr.write(txt)
        lyr.close()
    }
    else document.getElementById(id).innerHTML = txt
}

function im(url) {
    window.open(url, 'im', 'channelmode=no, directories=no, fullscreen=no, height=350, left=100, location=no, menubar=no, resizable=no, scrollbars=no, status=no, titlebar=no, toolbar=no, top=100, width=180');
}

//Enquete
function enviar(){
    var janela = window.open("","Enquete","location=no,menubar=0,toolbar=no,titlebar=no,status=no,top=0,left=0,scrollbars=no,resizable=no,width=400,height=340");
    janela.resizeTo(360, 210); 
    //janela.resizeTo(screen.availWidth, screen.availHeight);
    //document.login.screenwidth.value  = screen.availWidth;
    //document.login.screenheight.value = screen.availHeight;
}

function enviar_formulario(){
    var janela = window.open("","Comentarios","location=no,menubar=0,toolbar=no,titlebar=no,status=no,top=0,left=0,scrollbars=yes,resizable=no,width=400,height=340");
    janela.resizeTo(500, 350); 
    //janela.resizeTo(screen.availWidth, screen.availHeight);
    //document.login.screenwidth.value  = screen.availWidth;
    //document.login.screenheight.value = screen.availHeight;
}

//Fim Enquete