function onEconomyEnd() {
	$('presentation_economy').innerHTML = ' ';
	$('presentation_economy').style.display = 'none';
	$('presentation_gallery_economy').style.display = 'block';
}
function onFamilyEnd() {
	$('presentation_family').innerHTML = ' ';
	$('presentation_family').style.display = 'none';
	$('presentation_gallery_family').style.display = 'block';
}
function onProgramEnd() {
	$('presentation_program').innerHTML = ' ';
	$('presentation_program').style.display = 'none';
	$('presentation_gallery_program').style.display = 'block';
}
function onValueEnd() {
	$('presentation_value').innerHTML = ' ';
	$('presentation_value').style.display = 'none';
	$('presentation_gallery_value').style.display = 'block';
}

function getInstitutions( type_id, institution_id ) {

	$('documents_institutions').options.length = 0;
	$('documents_institutions').options[0] = new Option(institutions_label, '');

	if ( !documentsTypes[type_id] ) {
		
		return;
	}

	var n = 1,
		i;
	
	for ( i in documentsTypes[type_id] ) {
		
		$('documents_institutions').options[n] = new Option(documentsTypes[type_id][i], i);

		if (institution_id && i == institution_id) {
			
			$('documents_institutions').options[n].selected = true;
		}

		n++;
	}
}