From 228ebeab0621ed2e439f793146a560463c236388 Mon Sep 17 00:00:00 2001
From: Dylan Powers <dylan.kyle.powers@gmail.com>
Date: Tue, 6 Jan 2015 16:37:46 -0800
Subject: [PATCH] Patch from https://github.com/Polymer/core-dropdown/pull/14

This brings a fix to https://github.com/Polymer/core-dropdown/issues/11
---
 lib/src/core-dropdown/core-dropdown.html | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/lib/src/core-dropdown/core-dropdown.html b/lib/src/core-dropdown/core-dropdown.html
index fdd9fb7..2d1bf10 100644
--- a/lib/src/core-dropdown/core-dropdown.html
+++ b/lib/src/core-dropdown/core-dropdown.html
@@ -183,13 +183,16 @@
     resetTargetDimensions: function() {
       var dims = this.dimensions;
       var style = this.target.style;
-      if (dims.position.h_by === this.localName) {
-        style[dims.position.h] = null;
-        dims.position.h_by = null;
-      }
-      if (dims.position.v_by === this.localName) {
-        style[dims.position.v] = null;
-        dims.position.v_by = null;
+      // Dims may be not define 
+      if(dims) {
+          if (dims.position.h_by === this.localName) {
+              style[dims.position.h] = null;
+              dims.position.h_by = null;
+          }
+          if (dims.position.v_by === this.localName) {
+              style[dims.position.v] = null;
+              dims.position.v_by = null;
+          }
       }
       this.super();
     },