sl = true;
myTick = false;
curr = 1;

function slideNews(id, human) {

	if (sl == true) {

	sl = false;
	
	curr = id;

	if (human == true) clearTimeout(myAutoTick); 

	// zmiana strzałki
	
	for (i = 1; i <= 4; i++) {
	
		instancja = document.getElementById('arr'+i);
		
		instancja.innerHTML = '<img src="gfx/arr_l.gif" alt="." />';
	
	}

	instancja = document.getElementById('arr'+id);
	
	instancja.innerHTML = '<img src="gfx/arr_r.gif" alt="." />';
	
	var openedWidth = 564;
	var closedWidth = 35;

	for (i = 1; i <= 4; i++) {
	
		instancja = document.getElementById('news'+i);
		
		if (parseInt(instancja.style.width) > closedWidth)
		closeNews = i;
	
	}
	
	slideIt(id, closeNews, openedWidth, closedWidth);
	
	}

}

function slideIt(openNewsId, closeNewsId, openedWidth, closedWidth) {

	var slideSpeed = 7;


	openNews = document.getElementById('news'+openNewsId);
	closeNews = document.getElementById('news'+closeNewsId);
	
		thisCloseWidth = parseInt(closeNews.style.width);
		thisOpenWidth = parseInt(openNews.style.width);	
	
		move = Math.ceil( (openedWidth - thisOpenWidth) / slideSpeed);
					
		//alert(move);			
					
		openNews.style.width = (thisOpenWidth + move) + 'px';
		closeNews.style.width = (thisCloseWidth - move) + 'px';
	
		if (move > 0) {
		
		myTick = setTimeout("slideIt("+openNewsId+", "+closeNewsId+", "+openedWidth+", "+closedWidth+")", 5);
		
		}
		
		if (move == 0) { unTick(); }


}

function unTick() {
	clearTimeout(myTick); 
	sl = true;		
}

function autoTick(id, human) {
	
	nextId = id + 1;
	
	if (nextId > 4) nextId = 1;	
		
	slideNews(nextId, human);
	
	myAutoTick = setTimeout("autoTick("+nextId+", "+human+")", 5000);
	
}