// Umgebung untersuchen
//  <script language="JavaScript1.2" src="wobinich.js"></script>

var ns4_browser = 0;
var ns6_browser = 0;
var ie_browser  = 0;
var xmax = 0;
var ymax = 0;
var xoff = 0;
var yoff = 0;

detect_browser();
window_size();

//document.write('x='+xoff+'+'+xmax+' y='+yoff+'+'+ymax);

function detect_browser() {
  if (document.layers) { ns4_browser = 1 }
  if (document.all) { ie_browser = 1 }
  if (document.getElementById && !document.all) { ns6_browser = 1 }
}

function window_size() {
  if (ie_browser) {
    xmax = window.document.body.clientWidth;
    ymax = window.document.body.clientHeight;
    xoff = window.document.body.scrollLeft;
    yoff = window.document.body.scrollTop;
  }
  else {
    xmax = window.innerWidth;
    ymax = window.innerHeight;
    xoff = window.pageXOffset;
    yoff = window.pageYOffset;
  }
}