function slide(direction){
	var div=$('sliding-images');
	var sirina = -WID * direction;
	var mduration=500;
	div.set('morph', {duration: mduration, transition: Fx.Transitions.Sine.easeInOut});
	div.morph({left:[WID, WID + sirina]});
	aktiven += -direction;
	if(direction == -1){
		if(aktiven >= ALL) aktiven = 0;
		setTimeout("destroyFirst()", mduration+100);
	}
	if(direction == 1){
		if(aktiven < 0) aktiven = ALL -1;
		setTimeout("destroyLast()", mduration+100);
	}
}

function destroyFirst(){
	$('sliding-images').getFirst('img').clone().inject('sliding-images', 'bottom');
	$('sliding-images').getFirst('img').destroy();
	$('sliding-images').setStyle('left', WID);
	setStudija();
	$('a-slider-right').setStyle('display','block');
}

function destroyLast(){
	$('sliding-images').getLast('img').clone().inject('sliding-images', 'top');
	$('sliding-images').getLast('img').destroy();
	$('sliding-images').setStyle('left', WID);
	setStudija();
	$('a-slider-left').setStyle('display','block');
}

function setStudija(){
	$('studija_caption').innerHTML = naslovi[aktiven];
	$('studija_desc').innerHTML = opisi[aktiven];
}

window.addEvent('domready',function(){
	$('plus_minus').addEvent('click', function(e){
		e.stop();
		var sdiv = $('studija');
		var znak = this.innerHTML;
		sdiv.set('morph', {duration: 500, transition: Fx.Transitions.Sine.easeInOut});
		if(znak=='+'){
			sdiv.morph({height:[28, 214]});
			this.innerHTML = '&ndash;';
		}else{
			sdiv.morph({height:[214, 28]});
			this.innerHTML = '+';
		}
	});
	
	$('a-slider-left').addEvent('click', function(e){
		this.setStyle('display','none');
		e.stop();
		slide(1);
	});
	
	$('a-slider-right').addEvent('click', function(e){
		this.setStyle('display','none');
		e.stop();
		slide(-1);
	});
	
	$('studija_caption').innerHTML = naslovi[aktiven];
	$('studija_desc').innerHTML = opisi[aktiven];
});