function checkfr()
{

var em = document.fr.email.value;
var fem = document.fr.femail.value;
if (empty(em,"Your Email")  && empty(fem,"Friend's Email")  && doverifyfr() && doverifyefr())
{
document.fr.submit();
}
}


function doverifyfr()
{
if ((document.fr.email.value.indexOf('@',0)==-1) ||  (document.fr.email.value.indexOf('.',0)==-1))
{
alert('Not a valid Email address !!!');
return false;
}
else
{
return true
}
}

function doverifyefr()
{
if ((document.fr.femail.value.indexOf('@',0)==-1) ||  (document.fr.femail.value.indexOf('.',0)==-1))
{
alert('Not a valid Email address !!!');
return false;
}
else
{
return true
}
}


function checkns()
{

var em = document.ns.email.value;

if (empty(em,"Email")  && doverifyns())
{
document.ns.submit();
}
}


function doverifyns()
{
if ((document.ns.email.value.indexOf('@',0)==-1) ||  (document.ns.email.value.indexOf('.',0)==-1))
{
alert('Not a valid Email address !!!');
return false;
}
else
{
return true
}
}

function checkaf()
{
var uid = document.af.userid.value;
var pase = document.af.password.value

if (empty(uid,"Affiliate-ID") && empty(pase,"Password"))
{
document.af.submit();
}
}

function empty(field, name)
{
if (field =="")
{
alert("The " + name + " field is empty. Please enter the " + name + ".");
return false;
}
return true
}