function confirmSubmit()
{
  var agree=confirm("Are you sure you want to delete this record?");
  if (agree)
	  return true ;
  else
	return false ;
}
function confirmLessonReset() 
{
  if (confirm("Are you sure you want to clear form?")) 
  {
    document.lessonform.reset();
  }
}
function add(assignedID, availableID)
{
  // copy any selected options
  var assigned = document.getElementById(assignedID);
  var available = document.getElementById(availableID);
  for(var z=0; z<available.length; z++)
  {
    if(available.options[z].selected)
    {
      try
      {
        assigned.add(available.options[z], null);
        z--;
      }
      catch(e)
      {
        var newOption = new Option(available.options[z].text, available.options[z].value);
        assigned.add(newOption);
      }
    }
  }

  // remove any copied options
  for(var z=0; z<available.length; z++)
  {
    if(available.options[z].selected)
    {
      available.remove(z);
      z--;
    }
  }

  // unselect all options
  for(var z=0; z<assigned.length; z++)
  {
    assigned.options[z].selected = false;
  }
}
function remove(assignedID, availableID)
{
  // copy any selected options
  var assigned = document.getElementById(assignedID);
  var available = document.getElementById(availableID);
  for(var z=0; z<assigned.length; z++)
  {
    if(assigned.options[z].selected)
    {
      try
      {
        available.add(assigned.options[z], null);
        z--;
      }
      catch(e)
      {
        var newOption = new Option(assigned.options[z].text, assigned.options[z].value);
        available.add(newOption);
      }
    }
  }
  
  // copy any selected options
  for(var z=0; z<assigned.length; z++)
  {
    if(assigned.options[z].selected)
    {
      assigned.remove(z);
      z--;
    }
  }
  
  // unselect all options
  for(var z=0; z<available.length; z++)
  {
    available.options[z].selected = false;
  }
}
function selectAll(list)
{
  for(var z=0; z<list.length; z++)
  {
    list.options[z].selected = true;
  }
}
function postForm()
{
  var addenda_assigned = document.getElementById('addenda_assigned');
  var code_assigned = document.getElementById('code_assigned');
  var keyword_assigned = document.getElementById('keyword_assigned');
  
  selectAll(addenda_assigned);
  selectAll(code_assigned);
  selectAll(keyword_assigned);

  document.lessonform.submit();
}
function postAddendumForm()
{
  var file_assigned = document.getElementById('file_assigned');
  var link_assigned = document.getElementById('link_assigned');

  selectAll(file_assigned);
  selectAll(link_assigned);

  document.addendumform.submit();
}