Fixed scroll issue when scrolling down to elements bigger than window

Author: Nyholm

intro.js

@@ -535,14 +535,15 @@
 
     if (!_elementInViewport(targetElement.element)) {
       var rect = targetElement.element.getBoundingClientRect(),
-          top = rect.bottom - (rect.bottom - rect.top),
-          bottom = rect.bottom - _getWinSize().height;
+        winHeight=_getWinSize().height,
+        top = rect.bottom - (rect.bottom - rect.top),
+        bottom = rect.bottom - winHeight;
 
       // Scroll up
-      if (top < 0) {
+      if (top < 0 || targetElement.element.clientHeight > winHeight) {
         window.scrollBy(0, top - 30); // 30px padding from edge to look nice
 
-      // Scroll down
+        // Scroll down
       } else {
         window.scrollBy(0, bottom + 100); // 70px + 30px padding from edge to look nice
       }