function QueryString(variavel) {
    var variaveis = location.search.replace(/\x3F/, "").replace(/\x2B/g, " ").split("&")
    var nvar
    if (variaveis != "") {
        var qs = []
        for (var i = 0; i < variaveis.length; i++) {
            nvar = variaveis[i].split("=")
            qs[nvar[0]] = unescape(nvar[1])
        }
        return qs[variavel]
    }
    return null
}

function NewWindow(mypage, myname, w, h, scroll) {
    var winl = (screen.width - w) / 2;
    var wint = (screen.height - h) / 2;
    winprops = 'height=' + h + ',width=' + w + ',top=' + wint + ',left=' + winl + ',resizable';
    win = window.open(mypage, myname, winprops);
    if (parseInt(navigator.appVersion) >= 4) {
        win.window.focus();
    }
}