|  | @@ -441,7 +441,7 @@ var map = L.map('m', {renderer: L.canvas(), attributionControl: false}).setView(
 | 
	
		
			
			| 441 | 441 |  
 | 
	
		
			
			| 442 | 442 |  map.addControl(L.control.attribution({
 | 
	
		
			
			| 443 | 443 |      position: 'bottomright',
 | 
	
		
			
			| 444 |  | -    prefix: '© <a href="http://ad.cs.uni-freiburg.de">University of Freiburg, Chair of Algorithms and Data Structures</a>'
 | 
	
		
			
			|  | 444 | +    prefix: '© <a href="https://ad.cs.uni-freiburg.de">University of Freiburg, Chair of Algorithms and Data Structures</a>'
 | 
	
		
			
			| 445 | 445 |  }));
 | 
	
		
			
			| 446 | 446 |  
 | 
	
		
			
			| 447 | 447 |  map.on('popupopen', function(e) {
 | 
	
	
		
			
			|  | @@ -454,9 +454,9 @@ map.on('popupopen', function(e) {
 | 
	
		
			
			| 454 | 454 |      s();
 | 
	
		
			
			| 455 | 455 |  });
 | 
	
		
			
			| 456 | 456 |  
 | 
	
		
			
			| 457 |  | -L.tileLayer('http://{s}.tile.stamen.com/toner-lite/{z}/{x}/{y}.png', {
 | 
	
		
			
			|  | 457 | +L.tileLayer('https://stamen-tiles-{s}.a.ssl.fastly.net/toner-lite/{z}/{x}/{y}.png', {
 | 
	
		
			
			| 458 | 458 |      maxZoom: 20,
 | 
	
		
			
			| 459 |  | -    attribution: '© <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>',
 | 
	
		
			
			|  | 459 | +    attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a>',
 | 
	
		
			
			| 460 | 460 |      opacity: 0.8
 | 
	
		
			
			| 461 | 461 |  }).addTo(map);
 | 
	
		
			
			| 462 | 462 |  
 |