diff -r de1e7cf6bfc4 -r 7253d4d06f0d src/widgets/Arrow.js
--- a/src/widgets/Arrow.js	Fri Oct 25 01:32:13 2013 +0200
+++ b/src/widgets/Arrow.js	Thu Jan 02 16:54:22 2014 +0100
@@ -25,6 +25,7 @@
         overflow: "hidden"
     });
     this.paper = new Raphael(this.container, this.width, 1+this.height );
+    window.myArrow = this;
     this.svgArrow = this.paper.path('M0,' + this.height + 'L' + this.width + ',' + this.height);
     this.svgArrow.attr({
         stroke: this.stroke_color,