function doSubmit(form)
{
	var fname = form.fname;
	var email = form.email;
	if(fname.value == "" || fname.value == "First Name")
	{
		alert("Please enter your First name");
		fname.focus();
		return false;
	}
	if(email.value == "")
	{
		alert("Please enter your Email address");
		email.focus();
		return false;
	}
	
	if (isEmail(email.value))
	{
        form.submit();
	}
	else 
	{
		alert("Please check your email address. The format seems to be invalid.");
		email.focus();
		return false;
	}
}

function isEmail (s)
{   
   
    var i = 1;
    var sLength = s.length;

    while ((i < sLength) && (s.charAt(i) != "@"))
    { i++
    }

    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;

    while ((i < sLength) && (s.charAt(i) != "."))
    { i++
    }

    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;
}