function formCheck() 
    {
        
    if (document.join.login.value == "") 
        {
        alert("Please enter a login name.");
        return false;
        }
        
 	if (document.join.firstname.value == "") 
        {
        alert("Please enter your first name.");
        return false;
        }
        
    if (document.join.lastname.value == "") 
        {
        alert("Please enter your last name.");
        return false;
        }
    
    if (document.join.email.value == "") 
        {
        alert("Please enter a valid e-mail address.");
        return false;
        }
                
    }