function KKDatenSichtbar( zahlungsart ) {
	 
	var kkdiv = $("kartendaten");
	var visible = zahlungsart.value != 'rg';
	setElementVisible( kkdiv, visible );
	var elements = getKartenElements(); 
	for( var i = 0; i < elements.length; i++ ){
		var element = $(elements[i]);
			if( visible )
				element.addClass( validator.options.mandatory_class );
			else
				element.removeClass( validator.options.mandatory_class );
	}
	validator.setMandatoryElements();
	if( visible ){
			elements[0].focus();
	}
}

function getKartenElements(){
	return new Array( getElement("id", "kartennr"), getElement("id", "gueltig"), getElement("id", "inhaber") );
}