var picwin;

function openpicwin(url,name,w,h) {
  var doPopUpX = (screen.width-w)/2;
  var doPopUpY = (screen.height-h)/2;
  var pos = ",left="+doPopUpX+",top="+doPopUpY;
  var features="width="+w+",height="+h+pos+",status=no, location=no, menu=no, scrollbars=no";
  if (picwin)
    {if (picwin.closed == false) picwin.close();}
  picwin=window.open(url,name,features);
}
function openanfahrt(url,name,w,h) {
  var doPopUpX = (screen.width-w)/2;
  var doPopUpY = (screen.height-h)/2;
  var pos = ",left="+doPopUpX+",top="+doPopUpY;
  var features="width="+w+",height="+h+pos+",status=no, location=no, menu=no, scrollbars=yes, resizable=yes";
  if (picwin)
    {if (picwin.closed == false) picwin.close();}
  picwin=window.open(url,name,features);
}
function closepicwin() {
  if (picwin)
    {if (picwin.closed == false) picwin.close();}
}