TexeL

using UnityEngine;
using System.Collections;

public class WEBCONNECTOR : MonoBehaviour
{
    void Start()
    {
        Application.ExternalEval("function onfoc(){GetUnity().SendMessage('WEBCONNECTOR','BrowserFocus','...');}");
        Application.ExternalEval("function onblr(){GetUnity().SendMessage('WEBCONNECTOR','BrowserBlur','...');}");
        Application.ExternalEval("window.onfocus=onfoc;");
        Application.ExternalEval("window.onblur=onblr;");
        Debug.Log("Set");
    }

    void BrowserBlur()
    {
        Debug.Log("Blur");
    }

    void BrowserFocus()
    {
        Debug.Log("Focus");
    }
}