function bookOnLoad() {
	var e = document.getElementById('book');
	if (e.style.display == 'none') {
		document.getElementById('visibleChanges').innerHTML = 'Gästebuch anzeigen';
	} else {
		document.getElementById('visibleChanges').innerHTML = 'Gästebuch verstecken';
	}
}

function bookChanges() {
	var e = document.getElementById('book');
	if (e.style.display == 'none') {
		e.style.display = 'block';
		document.getElementById('visibleChanges').innerHTML = 'Gästebuch verstecken';
	} else {
		e.style.display = 'none';
		document.getElementById('visibleChanges').innerHTML = 'Gästebuch anzeigen';
	}
	return false;
}

function switchScreenshot(e, c) {
	for (i = 0; i <= 1; i++) {
		document.getElementById('c' + i).className = c == i ? 'w' : '';
	}
	document.getElementById('screenshot').src = e;
	return false;
}

function decryptMailAddress(s) {
	var array = s.split('|');
	var decrypted = '';
	for(var i = 0; i <= array.length - 1; i++) {
		decrypted = decrypted + String.fromCharCode(array[i]);
	}
	window.location.href = 'mailto:' + decrypted;
}