function zaznacz_kol(szDivID, vis)
{
    var obj = document.getElementById(szDivID);
    
    if (vis)
    	obj.style.visibility = "visible";
    else
    	obj.style.visibility = "hidden";
}
function pokaz_opispan(szDivID)
{
    var obj = document.getElementById(szDivID);
    if (obj.style.visibility == "visible")
    	obj.style.visibility = "hidden";
    else
    	obj.style.visibility = "visible";
    return false;
}
function zmienPrzycisk(przycisk, obrazek)
{
	image = new Image();
	image.src = obrazek;
	document.images[przycisk].src = image.src;
}