-        function aboveViewport(container, element, treshold) {
-            return $(container).offset().top >= $(element).offset().top + $(element).height() + treshold;
-        }
-        
-        function belowViewport(container, element, treshold) {
-            return $(container).offset().top + $(container).height() + treshold <= $(element).offset().top;
-        }
-        
-        var TRESHOLD = 600;
-        var lastScroll = -1000;
-                    
-        function checkScroll() {
-            console.log('checkScroll', $('#images').scrollTop(), lastScroll);
-            
-            if (Math.abs($('#images').scrollTop() - lastScroll) > 300) {
-                console.log('checking!');
-                
-                var container = $('#images');
-                lastScroll = container.scrollTop();
-                
-                $('#images .image-box').each(function() {
-                    if (aboveViewport(container, this, TRESHOLD)) {
-                        $(this).html('loading...');
-                    } else if (belowViewport(container, this, TRESHOLD)) {
-                        $(this).html('loading...');
-                    } else {
-                        $(this).html('<img src="' + $(this).attr('src') + '" width="460" height="460"/>');
-                    }
-                })
-            }
-            setTimeout(checkScroll, 2000);
-        }
-