function setbox(field) {
	if (field.value=='' || field.value=='Vul een titel, auteur of trefwoord in') {
		field.style.color = '#999999';
		field.style.fontWeight = 'normal';
		field.value = 'Vul een titel, auteur of trefwoord in';
	}
}

function resetbox(field) {
	if (field.value=='' || field.value=='Vul een titel, auteur of trefwoord in') {
		field.style.color = '#d4144b';
		field.style.fontWeight = 'bold';
		field.value = '';
		x = '';
		y = '';
		document.forms.searchform.action = "http://home.kluwer.nl/kluwer/portal_klnl/zoeken/browse.ep";
	}
}

function setaction(field) {
	document.forms.searchform.action = "http://home.kluwer.nl/kluwer/portal_klnl/zoeken/search.ep";
}

function set_kaap_url(field) {
	if (field[field.selectedIndex].value=='') {
		document.forms.form_ezines.action = "";
	} else {
		document.forms.form_ezines.action = "http://kaap.crmservice.eu/"+field[field.selectedIndex].value+"/aanmelding.aspx";
	}
}

function goto_kaap_url() {
	var field = document.getElementById('ezines');
	if (field[field.selectedIndex].value!='') {
		document.forms.form_ezines.submit();
	}
}

function show() {
  	document.getElementById('communities').style.display = "block";
}

function hide() {
	document.getElementById('communities').style.display = "none";
}