function openPopupGb(url) {
	gbPopup = window.open(url,'popupWindow','width=450,height=470');
	if (!gbPopup.opener) {
		gbPopup.opener = self; 
	}
}

function copyFormGb() {
	if (!document.formulier.naam.value)
	{
		alert("U moet uw naam invullen!");
	} else {
		if (!document.formulier.tekstbox.value)
		{
			alert("U moet een berichtje intypen!");
		} else {			
			opener.document.hiddenGb.naam.value = document.formulier.naam.value;
			opener.document.hiddenGb.emailadres.value = document.formulier.emailadres.value;	
			opener.document.hiddenGb.website.value = document.formulier.website.value;	
			opener.document.hiddenGb.entry.value = document.formulier.tekstbox.value;	
			opener.document.hiddenGb.addEntry.value = document.formulier.addEntry.value;	
			opener.document.hiddenGb.submit();	  		
			window.close();		
		}
	}
	return false;
}