var btnPlay = true;
    function btnPlayClick()
    {
        if(btnPlay)
        {
            document.getElementById('play').style.backgroundImage="url(tabs_slideshow/btn_play.png)";
            $("div.tabs").tabs().stop();
        }
        else
        {
            document.getElementById('play').style.backgroundImage="url(tabs_slideshow/btn_pause.png)";
            $("div.tabs").tabs().play();
        }
        btnPlay = !btnPlay;
    }