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("");
}