function expand()
{
  textarea = document.getElementById('comment_content');
  textarea.rows = 7;
}

function contract()
{
  textarea = document.getElementById('comment_content');
  textarea.rows = 2;
}

function reply_to(number, creator_identifier)
{
	textarea = document.getElementById('comment_content');
	
	if (creator_identifier == '')
	{
	  textarea.value = "@" + number + ": ";
	}
	else
	{
	  textarea.value = "@" + number + " (" + creator_identifier + "): ";
	}
	
	textarea.value += '';
}

function append_participant(email)
{
	textarea = document.getElementById('authors');
	textarea.value += email;
	textarea.focus();
}