var pic = "";

rollpic = function (img_name, img_src) {
document[img_name].src=img_src;
}

foto = function(grupa, dir, pic){
rollpic('image', grupa + '/foto/' + dir + '/' + pic + '.jpg');
}

mapa = function(pic){
rollpic('image', '../img/' + pic + '.png');
}

fade = function (id, opacity) {
var object = document.getElementById(id).style;
object.opacity = (opacity / 100);
object.MozOpacity = (opacity / 100);
object.KhtmlOpacity = (opacity / 100);
object.filter = "alpha(opacity=" + opacity + ")";
}

hidePict = function(){
document.getElementById("show").style.display = "none";
rollpic('art', '');
}
showPict = function(imgPath){
document.getElementById("show").style.display = "block";
rollpic('art', imgPath);
}