var imgNum = 0;
var pwaSlideSpeed = 1500;
var pwaImageSize = 64;
var pwaBorder = true;
var pwaBorderSize = 2;
var pwaBorderColor = '#FFFFFF';
var pwaCurrent = 0;
	
function pwShow(root) {
feed = root.feed;
entries = feed.entry || [];
lengte = feed.entry.length;
pwaVul();
pwaCurrent=Math.ceil(Math.random()*lengte);
pwaPlay();
}

function pwaVul(){
pwf= document.getElementById('pwFeed');

ul = document.createElement('ul');
ul.id = 'pwaUL';
ul.style.listStyleType = 'none';
ul.style.margin = '0 0 0 13px';

pwaFetch = feed.entry.length;

for (var i = 0; i < pwaFetch ; ++i) {
var entry = feed.entry[i];
var jsonImage = entry.media$group.media$content[0].url;

li = document.createElement('li');
li.style.display = 'none';
li.id = 'pwa'+ imgNum;

a = document.createElement('a');
a.href ="picasa.html"
a.title = "Bekijk alle foto's";
img = document.createElement('img');
img.src = jsonImage + '?imgmax=' + pwaImageSize + '&crop=1';

if(pwaBorder){
img.style.padding = '2px';
img.style.border = pwaBorderSize + 'px ' + pwaBorderColor + ' solid';
}
 
img.style.width = pwaImageSize + 'px';
img.style.height = pwaImageSize + 'px';
a.appendChild(img);
li.appendChild(a);
ul.appendChild(li);
imgNum++;}

pwf.appendChild(ul);
}

function pwaPlay(){
if(pwaCurrent >0){
pwPrev = pwaCurrent - 1;
document.getElementById('pwa'+pwPrev).style.display = 'none';
}
else {
pwPrev = imgNum -1;
document.getElementById('pwa'+pwPrev).style.display = 'none';
}

document.getElementById('pwa'+pwaCurrent).style.display = 'block';
pwaCurrent++;
if (pwaCurrent == imgNum){
pwaCurrent = 0;
}

setTimeout('pwaPlay()', pwaSlideSpeed)}