function showLayer(id) {
	if( document.getElementById(id).style.display == 'block' ) {
		document.getElementById(id).style.display = 'none';
	} else {
		document.getElementById(id).style.display = 'block';
	}
}

function switchView(type) {
	switch( type ) {
		case 'gallery'		: document.gallery_view.product_view.value = type; document.gallery_view.submit(); break;
		case 'listing'		: document.listing_view.product_view.value = type; document.listing_view.submit(); break;
	}
}