[FIX] fixes a bug where dropdown menu used wrong coordinates when expanding rows (addon web_graph)

bzr revid: ged@openerp.com-20131120131543-d119benx379oglry

addons/web_graph/static/src/js/graph.js

@@ -186,7 +186,7 @@ var PivotTable = instance.web.Widget.extend({
             } else {
                 this.display_dropdown({row_id:row_id, 
                                        target: $(event.target), 
-                                       x: event.pageY, 
+                                       x: event.pageX, 
                                        y: event.pageY});
             }
         }