function showHide(eId) {
	if(document.getElementById) {

    if(document.getElementById('Vorkasse'))
		  document.getElementById('Vorkasse').style.display = 'none';
    if(document.getElementById('Lastschrift'))
		  document.getElementById('Lastschrift').style.display = 'none';
    if(document.getElementById('Rechnung'))
		  document.getElementById('Rechnung').style.display = 'none';
    if(document.getElementById('Kreditkarte'))
		  document.getElementById('Kreditkarte').style.display = 'none';
    if(document.getElementById(eId))
		  document.getElementById(eId).style.display = 'block';

    if(document.getElementById('error_Vorkasse'))
      document.getElementById('error_Vorkasse').style.display = 'none';
    if(document.getElementById('error_Lastschrift'))
      document.getElementById('error_Lastschrift').style.display = 'none';
    if(document.getElementById('error_Rechnung'))
      document.getElementById('error_Rechnung').style.display = 'none';
    if(document.getElementById('error_Kreditkarte'))
      document.getElementById('error_Kreditkarte').style.display = 'none';
    if(document.getElementById('error_'+eId))
      document.getElementById('error_'+eId).style.display = 'block';

		if(document.getElementById('link_Vorkasse'))
		  document.getElementById('link_Vorkasse').className = 'Off';
    if(document.getElementById('link_Lastschrift'))
		  document.getElementById('link_Lastschrift').className = 'Off';
    if(document.getElementById('link_Rechnung'))
		  document.getElementById('link_Rechnung').className = 'Off';
    if(document.getElementById('link_Kreditkarte'))
		  document.getElementById('link_Kreditkarte').className = 'Off';
    if(document.getElementById('link_'+eId))
		  document.getElementById('link_'+eId).className = 'On';

    if(document.getElementById('radio_Vorkasse'))
		  document.getElementById('radio_Vorkasse').checked = false;
    if(document.getElementById('radio_Lastschrift'))
		  document.getElementById('radio_Lastschrift').checked = false;
    if(document.getElementById('radio_Rechnung'))
		  document.getElementById('radio_Rechnung').checked = false;
    if(document.getElementById('radio_Kreditkarte'))
		  document.getElementById('radio_Kreditkarte').checked = false;
    if(document.getElementById('radio_'+eId))
		  document.getElementById('radio_'+eId).checked = 'checked';
	}
}