1 files changed, 26 insertions, 0 deletions

diff --git a/js/panels/Timeline/TimelinePanel.reel/TimelinePanel.js b/js/panels/Timeline/TimelinePanel.reel/TimelinePanel.js
index 470062ba..ceb37db6 100644
--- a/js/panels/Timeline/TimelinePanel.reel/TimelinePanel.js
+++ b/js/panels/Timeline/TimelinePanel.reel/TimelinePanel.js
@@ -243,6 +243,10 @@ var TimelinePanel = exports.TimelinePanel = Montage.create(Component, {
         value: false
     },
     
+    _areTracksCollapsing: {
+        value: false
+    },
+    
     _currentOpenSpanMenu: {
         value: false
     },
@@ -687,6 +691,14 @@ var TimelinePanel = exports.TimelinePanel = Montage.create(Component, {
                         // We have shuffled layers, so we need to update this.selectedLayers.
                         this.selectLayers([])
                 }
+
+                // Do we need to scroll the layers?
+                if (this._areTracksCollapsing !== false) {
+                        //console.log("diddraw: user_layers, layout_tracks", this.user_layers.scrollTop, this.layout_tracks.scrollTop);
+                    //this.layout_tracks.scrollTop = this.user_layers.scrollTop;\
+                    this.layout_tracks.scrollTop = this._areTracksCollapsing;
+                        this._areTracksCollapsing = false;
+                }
         }
     },
 
@@ -1097,11 +1109,25 @@ var TimelinePanel = exports.TimelinePanel = Montage.create(Component, {
             this.drawTimeMarkers();
         }
     },
+    
+    synchScrollbars: {
+        value: function(intScrollBy) {
+                //this.updateLayerScroll();
+                //this.user_layers.scrollTop = 0;
+                //this.layout_tracks.scrollTop = this.user_layers.scrollTop;
+                //console.log("synch: user_layers, layout_tracks", this.user_layers.scrollTop, this.layout_tracks.scrollTop);
+                this._areTracksCollapsing = this.layout_tracks.scrollTop - intScrollBy;
+                this.needsDraw = true;
+
+        }
+    },
 
     updateLayerScroll:{
         value:function () {
+                //console.log("TimelinePanel.updateLayerScroll")
                 this._areTracksScrolling = true;
                 this.needsDraw = true;
+                
         }
     },