function OpenWindow(url,name,width,height)
{
  var x=window.screenX+(window.outerWidth-width)/2;
  var y=window.screenY+(window.outerHeight-height)/2;
  window.open(url,name,"width="+width+",height="+height+",screenX="+x+",screenY="+y+",locationbar=no,menubar=no,resizeable=yes,scrollbars=yes,status=no");
}

function OpenWindowPIC(url){
  if (document.images[0].complete=="undefined")
  {
    alert("Ihre Browserversion unterstuetzt diese Funktion leider nicht.");
    return;
  }
  var winProperties = "toolbar=no,location=no,directories=no,status=no,copyhistory=no,width=200,height=100,resizable=yes";
  var s = url;
  var winStr="";

  for(i=0;i<s.length;i++) {
    winStr=winStr+s.charCodeAt(i).toString(16);
  }

  var windowPIC = open("pic.php", winStr, winProperties);
}