function zoomIn(anObj)
{
anObj.SetFieldOfView(anObj.GetFieldOfView() - 10);
timeout = setTimeout("zoomIn()", 200 );
}  
function zoomOut(anObj)
{
anObj.SetFieldOfView(anObj.GetFieldOfView() + 10);
timeout = setTimeout("zoomIn()", 200 );
}  
function oeffnefenster (url) {
fenster = window.open(url, "fenster1", "status=no,scrollbars=yes,resizable=yes");
fenster.focus();
}