function createCookie(name, value, days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        var expires = "; expires=" + date.toGMTString();
    }
    else var expires = "";
    document.cookie = name + "=" + value + expires + ";";
}

function readCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for (var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) == ' ') c = c.substring(1, c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
    }
    return null;
}

function eraseCookie(name) {
    createCookie(name, "", -1);
}

function OpenWindow(url, name, w, h, scrollbar, resizable) {
    var LeftPosition = screen.width / 2 - w / 2;
    var TopPosition = screen.height / 2 - h / 2;
//    var settings = "'width=" + w + ",height=" + h + ",scrollbars=" + scrollbar + ",resizable=" + resizable + ",screenX=200,screenY=200'";
    var settings = "'width=" + w + ",height=" + h + ",scrollbars=" + scrollbar + ",resizable=" + resizable + ",screenX=200,screenY=200'"
    window.open(url, name, settings);
}