function toggleStartStop(startstop) {
	link = document.getElementById('link_startstop');
	prevlinkobj1 = document.getElementById('prevlink1');
	nextlinkobj1 = document.getElementById('nextlink1');
	prevlinkobj2 = document.getElementById('prevlink2');
	nextlinkobj2 = document.getElementById('nextlink2');
	if (startstop == 'stop') {
		link.onclick = function() {stopSlideShow();toggleStartStop('start');return false;}
		link.innerHTML = 'Stop Slideshow';

		prevlinkobj1.style.display = 'none';
		nextlinkobj1.style.display = 'none';
		prevlinkobj2.style.display = 'none';
		nextlinkobj2.style.display = 'none';
	}
	else {
		link.onclick = function() {startSlideShow();toggleStartStop('stop');return false;}
		link.innerHTML = 'Start Slideshow';

		prevlinkobj1.style.display = 'inline';
		nextlinkobj1.style.display = 'inline';
		prevlinkobj2.style.display = 'inline';
		nextlinkobj2.style.display = 'inline';
	}
}

function startSlideShow () 
{
	
	aktiv = window.setInterval( function(){ 
						currentid = currentid + 1; 
						if (currentid >= filelength) {
						    currentid = 0;
						}
						nexturl = slidebaseurl + currentid + '/index.html?start=1'
						document.location.href=nexturl;  
						}, 5000 );
}

function stopSlideShow()
{
	window.clearInterval(aktiv);
}