function SwapHeaderImages(n,dir)
{
	var nm = n+'1';
	if (document.getElementById) 
	{
		var z = document.getElementById(nm);
		if(dir == "up")
			z.style.backgroundImage = 'url(graphics/naglowek/'+n+'2.jpg)';
		else
			z.style.backgroundImage = 'url(graphics/naglowek/'+n+'1.jpg)';	
	}
}


function showPopupFromGallery(image)
{
    var popUp = document.getElementById("popupcontent");
	document.getElementById('zoom').src = image;
	var new_width = document.getElementById('zoom').width;
	var new_top = document.getElementById('zoom').height;	
    popUp.style.marginLeft = -(new_width/2); 
    popUp.style.marginTop = -(new_top/2)-30;
	popUp.style.width = new_width+40;   
	popUp.style.height = new_top+40;	
    popUp.style.visibility = "visible";
}


function hidePopup()
{
	var popUp = document.getElementById("popupcontent");
    popUp.style.visibility = "hidden";
}