function showImage(url) {
	var div = document.getElementById('picasa_image_div');
	if(!div) {
		div = document.createElement('div');
		div.id = 'picasa_image_div';
		div.style.display = 'none';
		div.style.position = 'absolute';
		div.style.top = '0px';
		div.style.left = '0px';
		div.style.width = '100%';
		div.style.height = '100%';
		div.style.backgroundColor = 'white';
		document.getElementsByTagName('body')[0].appendChild(div);
	}
	div.innerHTML = '';
	var wrapper = document.createElement('div');
	wrapper.style.marginTop = '50px';
	wrapper.style.marginLeft = 'auto';
	var img = document.createElement('img');
	img.src = url;
	img.style.height = '80%';
	img.style.marginTop = '5%';
	img.style.marginLeft = 'auto';
	img.style.marginRight = 'auto';
	img.style.marginBottom = '50px';
	img.style.borderTop = '1px solid black';
	img.style.borderLeft = '1px solid black';
	img.style.borderRight = '1px solid black';
	img.style.borderBottom = '1px solid black';
	var a = document.createElement('a');
	a.innerHTML = 'Zurück';
	a.onclick = function() { $('picasa_image_div').fade({from: 0.75, to: 0}); };
	wrapper.appendChild(img);
	wrapper.appendChild(a);
	div.appendChild(wrapper);
	div.appear({from: 0, to: 0.75});
	return false;
}