/*切换*/
function show_div(b,d,s,n){
	for(i=1;i<=s;i++){
			var div=document.getElementById(d+i);
			var bg=document.getElementById(b+i);
			if(i==n){
				div.style.display="block";
				bg.className="now";
			}else{
			div.style.display="none";
			bg.className="not";
			}
	  }
}
/* 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, "")
}
/*验证用户名密码*/
function check(){
		if(document.form1.usename.value==""){
			alert("请输入用户名！");
			document.form1.usename.select();
			return false;
			}else if(document.form1.password.value==""){
				alert("请输入密码！");
				document.form1.password.select();
				return false;
				}else{
				return true;
		}
}