/* 多层切换 */
function show_div(pre,pree, n, select_n) {
	for (i = 1; i <= n; i++) {
		var div = document.getElementById(pre + i);
		var cha = document.getElementById(pree + i);
		div.style.display = "none";
		cha.className="off";
		if (i == select_n) {
			div.style.display = "block";
			cha.className="on";
      }
	}
}
/* 加入收藏 */
function bookmarksite(title, url){
if (document.all)
window.external.AddFavorite(url, title);
else if (window.sidebar)
window.sidebar.addPanel(title, url, "")
}
/* 设为首页 */