diff --git a/12/dragable.js b/12/dragable.js
index 7e9de0b..627b9b6 100644
--- a/12/dragable.js
+++ b/12/dragable.js
@@ -18,11 +18,11 @@
     if (e.type=="mousedown") {
       xOffset = e.clientX - rect.left; //clientX and getBoundingClientRect() both use viewable area adjusted when scrolling aka 'viewport'
       yOffset = e.clientY - rect.top;
-      window.addEventListener('mousemove', dragObject, true);
+      dragObj.addEventListener('mousemove', dragObject, true);
     } else if(e.type=="touchstart") {
       xOffset = e.targetTouches[0].clientX - rect.left;
       yOffset = e.targetTouches[0].clientY - rect.top;
-      window.addEventListener('touchmove', dragObject, true);
+      dragObj.addEventListener('touchmove', dragObject, true);
     }
   }
 
@@ -43,11 +43,11 @@
   }
 
   /*End dragging*/
-  document.onmouseup = function(e) {
+  dragObj.onmouseup = function(e) {
     if (dragObj) {
       dragObj = null;
-      window.removeEventListener('mousemove', dragObject, true);
-      window.removeEventListener('touchmove', dragObject, true);
+      dragObj.removeEventListener('mousemove', dragObject, true);
+      dragObj.removeEventListener('touchmove', dragObject, true);
     }
   }
 }
@@ -82,11 +82,11 @@ makeDragable('#shell_03header', '#shell_03')
     if (x.type=="mousedown") {
       xOffset2 = x.clientX - rect.left; //clientX and getBoundingClientRect() both use viewable area adjusted when scrolling aka 'viewport'
       yOffset2 = x.clientY - rect.top;
-      window.addEventListener('mousemove', dragObject2, true);
+      dragObj2.addEventListener('mousemove', dragObject2, true);
     } else if(e.type=="touchstart") {
       xOffset2 = x.targetTouches[0].clientX - rect.left;
       yOffset2 = x.targetTouches[0].clientY - rect.top;
-      window.addEventListener('touchmove', dragObject2, true);
+      dragObj2.addEventListener('touchmove', dragObject2, true);
     }
   }
 
@@ -107,11 +107,11 @@ makeDragable('#shell_03header', '#shell_03')
   }
 
   /*End dragging*/
-  document.onmouseup = function(x) {
+  dragObj2.onmouseup = function(x) {
     if (dragObj2) {
       dragObj2 = null;
-      window.removeEventListener('mousemove', dragObject2, true);
-      window.removeEventListener('touchmove', dragObject2, true);
+      dragObj2.removeEventListener('mousemove', dragObject2, true);
+      dragObj2.removeEventListener('touchmove', dragObject2, true);
     }
   }
 }