function checklogin() {
var username=document.userlogin.username.value;
var password=document.userlogin.password.value;


	if (username==""){
		alert('请输入用户名!');
		document.userlogin.username.select();
		return false;
	}
	if (password==""){
		alert('请输入登陆密码!');
		document.userlogin.password.select();
		return false;
	}

}

document.write ('<div class="g_userlogin" id="g_userlogin"><form name=userlogin id=userlogin method=post action=http://www.ks5u.com/user/Chk_userlogin.asp?par=code target=_self>用户名 <input type="text" name="username" class="g_user_inp" /> 密码 <input type="password" name="password" class="g_pass_inp" />  <input onclick=\"return checklogin()\" type=submit class="g_btn" value=登陆  />   <a href="/reg.html">注册</a> 您的IP <span class=red>38.103.63.16</span></form></div>');