var glDuration = 2000;
function showHideTileGlowLayer(show)
{
    if (MacOSSafari)
    {
        $('glow-tile').effect('opacity', {duration: 1700, transition: Fx.Transitions.Quart.easeOut}).start(show ? 0 : 1, show ? 1 : 0);
    }
    else
    {
        $('glow-tile').effect('opacity', {duration: 1900, transition: Fx.Transitions.Quart.easeOut}).start(show ? 0 : 1, show ? 1 : 0);
    }
    window.setTimeout("showHideTileGlowLayer(" + (!show) + ")", glDuration);
}

window.onload = function(){
   window.setTimeout("showHideTileGlowLayer(true)", glDuration);
}