function useAplhaStuff() {
        if(Browser.Engine.trident) {
            return false;
        } else {
            return true;
        }
}



window.addEvent("domready",function() {
    animVila();
    //if (animBg) (function(){changeBg('bg2.jpg'); }).delay(8000);
    
    $$('img.nav-img').each(function(el) {
    	el.addEvent('mouseenter', function(e) {
    		e.stop();

            new Fx.Tween(el, {
            	property: 'margin-top',
            	duration: 250,
            	transition: Fx.Transitions.Quart.easeInOut,
            	link: 'chain'
            }).start('0','5px').start('5px', '0');

    	});

    	
    });
    
})

function animVila() {
    $('vila').set('tween',{
    	duration: 2000,
    	transition: Fx.Transitions.Quad.easeIn,
    	link: 'chain'
    });
    $('vila').tween('top', 0).tween('top', 25);
    setTimeout(animVila, 5000);
}


function changeBg(bgimg) {

    $('super-wrapper').set('morph', {
    	duration: 500,
    	transition: Fx.Transitions.Sine.easeOut,
    	link: 'chain'
    });

    $('super-wrapper').morph({
        'opacity': 0
    }).morph({
        'background-image': 'url(/css/' + bgimg +')',
        'opacity': 1
    });

    if (bgimg == "bg2.jpg") {
        (function(){changeBg('bg1.jpg'); }).delay(8000);
    } else {
        (function(){changeBg('bg2.jpg'); }).delay(8000);
    }

}