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[redakcja.git] / project / static / js / jquery.lazyload.js

diff --git a/project/static/js/jquery.lazyload.js b/project/static/js/jquery.lazyload.js
index ea3de6f..c15167b 100644 (file)
--- a/project/static/js/jquery.lazyload.js
+++ b/project/static/js/jquery.lazyload.js
@@ -12,7 +12,7 @@
         }
         
         var container = this;
         }
         
         var container = this;

-        container.data('lastScroll', -10000);
+        container.data('lazyload:lastCheckedScrollTop', -10000);

         
         function aboveViewport(container, element, threshold) {
             return $(container).offset().top >= $(element).offset().top + $(element).height() + threshold;
         
         function aboveViewport(container, element, threshold) {
             return $(container).offset().top >= $(element).offset().top + $(element).height() + threshold;


@@ -23,8 +23,11 @@
         }
         
         function checkScroll() {
         }
         
         function checkScroll() {

-            if (Math.abs(container.scrollTop() - container.data('lastScroll')) > settings.scrollThreshold) {
-                container.data('lastScroll', container.scrollTop());
+            if (container.data('lazyload:lastCheckedScrollTop') == undefined) {
+                return;
+            }
+            if (Math.abs(container.scrollTop() - container.data('lazyload:lastCheckedScrollTop')) > settings.scrollThreshold) {
+                container.data('lazyload:lastCheckedScrollTop', container.scrollTop());

                 
                 $(pattern, container).each(function() {
                     if (aboveViewport(container, this, settings.threshold)
                 
                 $(pattern, container).each(function() {
                     if (aboveViewport(container, this, settings.threshold)