function IndexForm()
{    
    
    if (document.form.sertext.value.length == 0) 
    { 
        alert("请输入型号!");
        document.form.sertext.focus();
        return false;
    }   

    return true;
}
function IndexLogin()
{    
    
    if (document.form2.username.value.length == 0) 
    { 
        alert("请输入用户名!");
        document.form2.username.focus();
        return false;
    } 
	if (document.form2.userpwd.value.length == 0) 
    { 
        alert("请输入密码!");
        document.form2.userpwd.focus();
        return false;
    }
	if (document.form2.userrzm.value.length == 0) 
    { 
        alert("验证码不能为空!");
        document.form2.userrzm.focus();
        return false;
    }

    return true;
}