function popwin(url, wid, hgt, scrol){
  var winl = (screen.width-wid)/2;
  var wint = (screen.height-hgt)/2;
  if (winl < 0) {winl = 0;}
  if (wint < 0) {wint = 0;}
  newwindow=window.open(url,'',"width="+wid+",height="+hgt+",top="+wint+",left="+winl+",toolbar=0,scrollbars="+scrol+",location=0,directories=0,status=0,menuBar=0,resizable=0");
  newwindow.resizeTo(wid, hgt);
  if (window.focus) {newwindow.focus()}
}
function popwin_post(form, wid, hgt, scrol){
  var winl = (screen.width-wid)/2;
  var wint = (screen.height-hgt)/2;
  if (winl < 0) {winl = 0;}
  if (wint < 0) {wint = 0;}
  var newwindow = 'formTarget' + (new Date().getTime());
  form.target = newwindow;
  open ('', newwindow, "width="+wid+",height="+hgt+",top="+wint+",left="+winl+",toolbar=0,scrollbars="+scrol+",location=0,directories=0,status=0,menuBar=0,resizable=0");
  newwindow.resizeTo(wid, hgt);
  if (window.focus) {
    newwindow.focus();
  }
}