function winopen(){
  var site = "html/epraxis.htm";
  if (screen.width >= 1000){
    site = "html/epraxis.htm";
  }
  var w = screen.width - 10;
  var h = screen.height - 68;
  window.open(site,
              "",
              "top=0,left=0,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=auto,resizable=yes,width="+w+",height="+h
             );
}