function login(frm){
	var name = document.getElementById("name");
	var domain = document.getElementById("domain");
	var passwd = document.getElementById("passwd");
	if(name.value == ''){
		alert("用户名不能空，请输入用户名！");
		name.focus();
		return false;
	}else if(domain.value == ''){
		alert("域名不能为空，请输入域名！");
		domain.focus();
		return false;
	}else if(passwd.value == ''){
		alert("密码不能为空，请输入密码！");
		passwd.focus();
		return false;
	}
}