function openWindow(url, n, w, h, sb, r, mb, tb, s, loc, dir) {
    var screenWidth = window.screen.availWidth;
    var screenHeight = window.screen.availHeight;

    var offsetXWinXP = 5;
    var offsetYWinXP = 18;

    var halfScreenWidth = Number(window.screen.availWidth / 2);
    var halfScreenHeight = Number(window.screen.availHeight / 2);

    var halfWindowWidth = Number(w / 2);
    var halfWindowHeight = Number(h / 2);

    var diffWidth = Number(halfScreenWidth - halfWindowWidth);
    var diffHeight = Number(halfScreenHeight - halfWindowHeight);

    diffWidth -= offsetXWinXP;
    diffHeight -= offsetYWinXP;

    var windowName = n;

    if (windowName.length == 0) {
        //The windowName is a zero-based integer corresponding to the number of milliseconds
        //since January 1, 1970, to the date specified by the instance of the Date object;
        //therefore, the windowName will almost always be unique.
        var dtm = new Date();
        windowName = dtm.getTime();
    }

    //if (url == null) { url = "" };
    if (w == null) { w = 640 };
    if (h == null) { h = 480 };
    if (sb == null) { sb = "no" };
    if (r == null) { r = "no" };
    if (mb == null) { mb = "no" };
    if (tb == null) { tb = "no" };
    if (s == null) { s = "no" };
    if (loc == null) { loc = "no" };
    if (dir == null) { dir = "no" };

    var features = new StringBuilder();
    features.Append("directories=" + dir + ",");
    features.Append("location=" + loc + ",");
    features.Append("menubar=" + mb + ",");
    features.Append("resizable=" + r + ",");
    features.Append("scrollbars=" + sb + ",");
    features.Append("status=" + s + ",");
    features.Append("toolbar=" + tb + ",");
    features.Append("width=" + w + ",");
    features.Append("height=" + h + ",");
    features.Append("top=" + diffHeight + ",");
    features.Append("left=" + diffWidth);

    return window.open(url, windowName, features.ToString());
}

// Initializes a new instance of the StringBuilder class
// and appends the given value if supplied
function StringBuilder(value) {
    this.strings = new Array("");
    this.Append(value);
}

// Appends the given value to the end of this instance.
StringBuilder.prototype.Append = function(value) {
    if (value) {
        this.strings.push(value);
    }
}

// Appends the given value to the end of this instance with a line break.
StringBuilder.prototype.AppendLine = function(value) {
    if (value) {
        this.strings.push(value + "\n");
    }
}

// Clears the string buffer
StringBuilder.prototype.Clear = function() {
    this.strings.length = 1;
}

// Converts this instance to a String.
StringBuilder.prototype.ToString = function() {
    return this.strings.join("");
}