How to open Link from Facebook canvas game?

How can I set up link to open in a new tab from Facebook canvas app?

I made a game created script, link opens from unity engine but not in canvas app. Is there any other api to click external link from canvas?

I used this script:

using UnityEngine;
using System.Collections;

public class url : MonoBehaviour {
    public string links = "Paste your links here...";
    void OnClick()  {
        Debug.Log ("mouseclick");
        Application.OpenURL(links);
    }
}

Here are my links which are loading but not opening in game:

https://apps.facebook.com/icecreammania/

You have to enable settings in your admin panel, try this…