diff --git a/mindplot/src/main/javascript/DragPivot.js b/mindplot/src/main/javascript/DragPivot.js
index 9ee5ca3b..00efccc2 100644
--- a/mindplot/src/main/javascript/DragPivot.js
+++ b/mindplot/src/main/javascript/DragPivot.js
@@ -36,7 +36,8 @@ mindplot.DragPivot.prototype.getTargetTopic = function()
 
 mindplot.DragPivot.prototype._buildStraightLine = function()
 {
-    var line = new web2d.Line();
+    var line = new web2d.CurvedLine();
+    line.setStyle(web2d.CurvedLine.SIMPLE_LINE);
     line.setStroke(1, 'solid', '#CC0033');
     line.setOpacity(0.4);
     line.setVisibility(false);
@@ -45,7 +46,8 @@ mindplot.DragPivot.prototype._buildStraightLine = function()
 
 mindplot.DragPivot.prototype._buildCurvedLine = function()
 {
-    var line = new web2d.PolyLine();
+    var line = new web2d.CurvedLine();
+    line.setStyle(web2d.CurvedLine.SIMPLE_LINE);
     line.setStroke(1, 'solid', '#CC0033');
     line.setOpacity(0.4);
     line.setVisibility(false);
diff --git a/mindplot/src/main/javascript/DragTopicPositioner.js b/mindplot/src/main/javascript/DragTopicPositioner.js
index a5fcb31b..5426da84 100644
--- a/mindplot/src/main/javascript/DragTopicPositioner.js
+++ b/mindplot/src/main/javascript/DragTopicPositioner.js
@@ -42,7 +42,7 @@ mindplot.DragTopicPositioner.prototype.positionateDragTopic = function(dragTopic
     }
 };
 
-mindplot.DragTopicPositioner.CENTRAL_TO_MAINTOPIC_MAX_HORIZONTAL_DISTANCE = 300;
+mindplot.DragTopicPositioner.CENTRAL_TO_MAINTOPIC_MAX_HORIZONTAL_DISTANCE = 400;
 
 mindplot.DragTopicPositioner.prototype._checkDragTopicConnection = function(dragTopic)
 {
@@ -99,6 +99,7 @@ mindplot.DragTopicPositioner.prototype._lookUpForMainTopicToMainTopicConnection
     var result = null;
     var clouserDistance = -1;
     var draggedNode = dragTopic.getDraggedTopic();
+    var distance = null;
 
     // Check MainTopic->MainTopic connection...
     for (var i = 0; i < topics.length; i++)
@@ -110,8 +111,19 @@ mindplot.DragTopicPositioner.prototype._lookUpForMainTopicToMainTopicConnection
             var canBeConnected = dragTopic.canBeConnectedTo(targetTopic);
             if (canBeConnected)
             {
-                result = targetTopic;
-                break;
+                var targetPosition = targetTopic.getPosition();
+                var fix = position.y>targetPosition.y;
+                var gap = 0;
+                if(targetTopic._getChildren().length>0){
+                    gap = Math.abs(targetPosition.y - targetTopic._getChildren()[0].getPosition().y)
+                }
+                var yDistance = Math.abs(position.y -fix*gap - targetPosition.y);
+                if(distance==null || yDistance<distance)
+                {
+                     result = targetTopic;
+                    distance = yDistance;
+                }
+
             }
         }
     }
diff --git a/mindplot/src/main/javascript/NodeModel.js b/mindplot/src/main/javascript/NodeModel.js
index b242c841..0b7e4608 100644
--- a/mindplot/src/main/javascript/NodeModel.js
+++ b/mindplot/src/main/javascript/NodeModel.js
@@ -305,8 +305,12 @@ mindplot.NodeModel.prototype.canBeConnected = function(sourceModel, sourcePositi
         // Finally, check current node ubication.
         var targetTopicSize = targetModel.getSize();
         var yDistance = Math.abs(sourcePosition.y - targetPosition.y);
+        var gap = 35 + targetTopicHeight / 2;
+        if(targetModel.getChildren().length>0){
+            gap += Math.abs(targetPosition.y - targetModel.getChildren()[0].getPosition().y);
+        }
 
-        if (yDistance <= 5 + targetTopicHeight / 2)
+        if (yDistance <= gap)
         {
             // Circular connection ?
             if (!sourceModel._isChildNode(this))
@@ -339,7 +343,7 @@ mindplot.NodeModel.prototype.canBeConnected = function(sourceModel, sourcePositi
     return result;
 };
 
-mindplot.NodeModel.MAIN_TOPIC_TO_MAIN_TOPIC_DISTANCE = 60;
+mindplot.NodeModel.MAIN_TOPIC_TO_MAIN_TOPIC_DISTANCE = 220;
 
 mindplot.NodeModel.prototype._isChildNode = function(node)
 {