/* 
	jansass GmbH Hamburg | http://www.jansass.com

*/

function flip(which) {
  if (document.getElementById(which).style.display != 'block') {
		document.getElementById(which).style.display = 'block';
		document.getElementById(which).style.visibility = 'visible';
  } else {
		document.getElementById(which).style.display = 'none';
		document.getElementById(which).style.visibility = 'hidden';
	}
}