function toonveld(naam, naam2)
{	
    obj(naam).style.visibility = 'visible';
	obj(naam2).style.visibility = 'hidden';
}

function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=200,height=157,left = 412,top = 184');");
}