function goPrevURL(prevURL) {
	if (document.referrer.indexOf(prevURL) == -1){
		document.location = prevURL;
	}
	else {
		history.go(-1);	
	}
	return false;
}

hs.align = 'center';
hs.transitions = ['expand', 'crossfade'];
hs.outlineType = 'rounded-white';
hs.wrapperClassName = 'controls-in-heading';
hs.fadeInOut = true;
hs.showCredits = false;
hs.dimmingOpacity = 0.50;

// Add the controlbar
if (hs.addSlideshow) hs.addSlideshow({
	//slideshowGroup: 'group1',
	interval: 5000,
	repeat: false,
	useControls: true,
	fixedControls: false,
	overlayOptions: {
		opacity: 1,
		position: 'top right',
		hideOnMouseOut: false
	}
});