window.addEvent('domready', function() {

    var slideSingleUser = new Fx.Slide('single_user');
    var slideMultiUser = new Fx.Slide('multi_user');
    if(!$('order_abbonnementsvorm0').checked)
    {
        slideSingleUser.hide();
    }
    if(!$('order_abbonnementsvorm1').checked)
    {
        slideMultiUser.hide();
    }    
    
      
        
    $('order_abbonnementsvorm0').addEvent('click', function(e){
    
    	e = new Event(e);
        if ($('order_abbonnementsvorm0').checked) 
        {
    	    slideSingleUser.slideIn();
            slideMultiUser.hide();
        }
    
    });
    
    $('order_abbonnementsvorm1').addEvent('click', function(e){
    
    	e = new Event(e);
        if ($('order_abbonnementsvorm1').checked) 
        {
    	    slideSingleUser.hide();
            slideMultiUser.slideIn();
        }
    
    });
    
        sign_name();
});



function sign_name()
{
    var voornaam = document.getElementById('naam').value;
    var achternaam = document.getElementById('achternaam').value;
    document.getElementById('sign_name').innerHTML = voornaam + ' ' + achternaam;
}