function regForm(section)
    {
        if(section == "registration_form"){
            $(section).style.display = "block";
            $('introduction').style.display = "none";

            $(section).scrollTo(0, 0);
        }

        if(section == "introduction"){
            $(section).style.display = "block";
            $('registration_form').style.display = "none";

            $(section).scrollTo(0, 0);

        }
    }