function OpenWindow(url,w,h)
{
  var sw = screen.width;
  var sh = screen.height;
  var x = Math.ceil((sw - w) / 2);
  var y = Math.ceil((sh - h) / 2);
  window.open(url, "", "scrollbars=1, menubar=0, Width="+w+", Height="+h+", Left="+x+", Top="+y);
}

var bAboutVis = 0;
var bServVis = 0;

function ShowAbout()
{
  bAboutVis = !bAboutVis;

  if (bAboutVis)
    window.document.all.AboutLayer.style.display = "inline";
  else
    window.document.all.AboutLayer.style.display = "none";
}
function ShowServ()
{
  bServVis = !bServVis;

  if (bServVis)
    window.document.all.ServLayer.style.display = "inline";
  else
    window.document.all.ServLayer.style.display = "none";
}