function moveLeft(f,bDir) {
  var el = f.elements["left_slots"]
  var idx = el.selectedIndex
  if (idx==-1) 
    alert("You must first select the item to reorder.")
  else {
    var nxidx = idx+( bDir? -1 : 1)
    if (nxidx<0) nxidx=el.length-1
    if (nxidx>=el.length) nxidx=0
    var oldVal = el[idx].value
    var oldText = el[idx].text
    el[idx].value = el[nxidx].value
    el[idx].text = el[nxidx].text
    el[nxidx].value = oldVal
    el[nxidx].text = oldText
    el.selectedIndex = nxidx
  }
}
function moveRight(f,bDir) {
  var el = f.elements["right_slots"]
  var idx = el.selectedIndex
  if (idx==-1) 
    alert("You must first select the item to reorder.")
  else {
    var nxidx = idx+( bDir? -1 : 1)
    if (nxidx<0) nxidx=el.length-1
    if (nxidx>=el.length) nxidx=0
    var oldVal = el[idx].value
    var oldText = el[idx].text
    el[idx].value = el[nxidx].value
    el[idx].text = el[nxidx].text
    el[nxidx].value = oldVal
    el[nxidx].text = oldText
    el.selectedIndex = nxidx
  }
}

function submitPanes(f) {

  var el = f.elements["left_slots"]
  var fl = f.elements["right_slots"]

  f.slots_left.value='';
  f.slots_right.value='';

  for (i=0;i < el.length; i++)
  {
    f.slots_left.value += el[i].value + ', ';
  }

  for (i=0;i < fl.length; i++)
  {
    f.slots_right.value += fl[i].value + ', ';
  }

  f.submit();
}