function addEmail( email )
{
  if( checkMail( email ) )
  {
    new Ajax.Updater( 'newsletteradd', 'plugins/newsletter/newsletter.php', { method: 'post', postBody: 'nlemail=1&email='+email } );
  }
  else
  {
    alert("Diese E-Mail ist ungueltig!");
  }
}

function delEmail( email )
{
  if( checkMail( email ) )
  {
    new Ajax.Updater( 'newsletteradd', 'plugins/newsletter/newsletter.php', { method: 'post', postBody: 'delemail=1&email='+email } );
  }
  else
  {
    alert("Diese E-Mail ist ungueltig!");
  }
}

function getForm()
{
/*  new Ajax.Updater( 'newsletteradd', 'plugins/newsletter/newsletter.php', { method: 'post', postBody: 'prform=1' } ); */
  new Ajax.Request( 'plugins/newsletter/newsletter.php', { method: 'post', postBody: 'prform=1', onComplete: function(t) { $('newsletteradd').innerHTML = t.responseText; } } );
}

function showDelForm()
{
  new Ajax.Updater( 'newsletteradd', 'plugins/newsletter/newsletter.php', { method: 'post', postBody: 'delform=1' } );
}

function checkMail( email )
{
	var regexpr=/^\w[\w|\.|\-]+@\w[\w|\.|\-]+\.[a-zA-Z]{2,4}$/;

	if( !regexpr.test( email ) )
	{
	  return false;
	}
	else
	{
	  return true;
	}
}