var prepinac = new Array();
function swapImage(imgid) {
	if (prepinac[imgid] == null) {
		prepinac[imgid] = 2;
	}
	switch (prepinac[imgid]) {
		case 1:
	   		document.images[imgid].src = "/images/sipka-vpravo.gif";
   		prepinac[imgid] = 2;
	   		return(false);
		case 2:
	   		document.images[imgid].src = "/images/sipka-dolu.gif";
	   		prepinac[imgid] = 1;
	   		return(false);
	}
}
function showhide(id){
	if (document.getElementById){
		obj = document.getElementById(id);
		if (obj.style.display == "none"){
			obj.style.display = "";
		} else {
			obj.style.display = "none";
		}
	}
}