function bild_vergroessern (url, w, h)
{
	var baseUrl = '/bildpopup/vergroesserung/';
	var fullUrl = baseUrl + url;

	var winX = (screen.width - w) / 2;
	var winY = (screen.height - h) / 2;

	var properties = 'scrollbars=0,status=1,resizable=1,width=' + w + ',height=' + h + ',left=' +winX + ',top='+winY;
	var myWin = window.open('','_blank',properties);

	myWin.location.href = fullUrl;
}

function glossar_eintrag (url)
{
	var baseUrl = '/glossarpopup/glossar-eintrag/';
	var fullUrl = baseUrl + url;
	var w = 451;
	var h = 500;
	var winX = (screen.width - w) / 2;
	var winY = (screen.height - h) / 2;

	var properties = 'scrollbars=1,status=1,resizable=1,width=' + w + ',height=' + h + ',left=' +winX + ',top='+winY;
	var myWin = window.open('','_blank',properties);

	myWin.location.href = fullUrl;
}

function erlaeuterung_eintrag (url)
{
	var baseUrl = '/erlaeuterungpopup/erlaeuterung-eintrag/';
	var fullUrl = baseUrl + url;
	var w = 451;
	var h = 500;
	var winX = (screen.width - w) / 2;
	var winY = (screen.height - h) / 2;

	var properties = 'scrollbars=1,status=1,resizable=1,width=' + w + ',height=' + h + ',left=' +winX + ',top='+winY;
	var myWin = window.open('','_blank',properties);

	myWin.location.href = fullUrl;
}

function clearDefaultEntry (field, defaultEntry)
{
   if (field.value == defaultEntry) field.value = "";
}