function addBookmark(title,url) {
if (window.sidebar) {
window.sidebar.addPanel(title, url,"");
} else if( document.all ) {
window.external.AddFavorite( url, title);
} else if( window.opera && window.print ) {
return true;
}
}

function contact(form)
{

	if (form.naam.value == "") {
    alert( "Vul asljeblieft je naam in" );
    form.naam.focus();
    return false ;
  }
  
	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(form.email.value)) {}
	else{
    alert( "Het e-mailadres is niet ingevuld of ongeldig" );
    form.email.focus();
    return false ;
    }

	if (form.bericht.value == "") {
    alert( "Vul asljeblieft een bericht in" );
    form.bericht.focus();
    return false ;
  } 
  
return true ;
}