Index: public/javascripts/revision_graph.js
===================================================================
--- public/javascripts/revision_graph.js	(revision 8277)
+++ public/javascripts/revision_graph.js	(working copy)
@@ -26,7 +26,11 @@
 }
 
 function branchGraph(holder) {
-    var xstep = 20, ystep = 20;
+    var xstep = 20;
+
+    // Use the height of the revision rows for the difference between the dots
+    var ystep = $$('tr.changeset')[0].getHeight();
+
     var ch, cw;
     cw = max_space * xstep + xstep;
     ch = max_rdmid * ystep + ystep;