function showNeighbourhood(id1, id2) {

	document.getElementById(id1).style.display = 'block';
	document.getElementById(id2).style.display = 'none';

}

function nextImage() {

	if(document.getElementById('img1').style.display == 'block') {
	
		document.getElementById('img1').style.display = 'none';
		document.getElementById('img2').style.display = 'block';
		
	}
	else if(document.getElementById('img2').style.display == 'block') {
	
		document.getElementById('img2').style.display = 'none';
		document.getElementById('img3').style.display = 'block';
		
	}
	else if(document.getElementById('img3').style.display == 'block') {
	
		document.getElementById('img3').style.display = 'none';
		document.getElementById('img4').style.display = 'block';
		
	}
	else if(document.getElementById('img4').style.display == 'block') {
	
		document.getElementById('img4').style.display = 'none';
		document.getElementById('img5').style.display = 'block';
		
	}
	else if(document.getElementById('img5').style.display == 'block') {
	
		document.getElementById('img5').style.display = 'none';
		document.getElementById('img1').style.display = 'block';
		
	}
	
}