function HideShow(id,id1)
{
var el = document.getElementById(id);
var el1 = document.getElementById(id1);
el.style.display = 'none';
el1.style.display = 'block';
}

function email (login, sc)
{
        var serv = new Array;
        serv[0] = "svideos.ru";
        eml = login +  "@" + serv[sc];
        return eml;
}

function mylo (login, sc)
{
document.write (email(login, sc));
}

function namylo (login, sc, sub)
{
eml = "mailto:" + email(login, sc);
if (sub != "") eml += "?subject=" + sub;
window.location.href = eml;
}


function validate_form ( )
{
	valid = true;
 
        if ( document.contact_form.contact_name.value == "" )
        {
                alert ( "Пожалуйста напишите текст комментария перед отправкой!" );
                valid = false;
        }
 
        return valid;
}