function shwLst(rootUrl){
	if (!document.getElementById("bookoption02") || !document.getElementsByTagName) return;

	var fdnNd = document.getElementById("bookoption02");
	var btnNd = fdnNd.getElementsByTagName("img")[0];
	var lstNd = document.getElementById("booksound");
	fdnNd.style.backgroundPosition = "0 0";
	lstNd.style.display = "none";
	fdnNd.onmouseover = function(){
		fdnNd.style.backgroundPosition = "0 22px";
		lstNd.style.display = "block";
		if(document.body.className == "lang"){
			btnNd.src = rootUrl+"common/img/btn_bookoption02_lang_over.gif"
		}else if(document.body.className == "norm"){
			btnNd.src = rootUrl+"common/img/btn_bookoption02_norm_over.gif"
		}
	}
	fdnNd.onmouseout = function(){
		fdnNd.style.backgroundPosition = "0 0";
		lstNd.style.display = "none";
		btnNd.src = rootUrl+"common/img/btn_bookoption02_out.gif"
	}
}