/**
 * Inject a cute little progress spinner after the specified element
 *
 * @param element Element to inject after
 * @param id Identifier string (for use with removeSpinner(), below)
 */
function injectSpinner( element, id ) {
	var spinner = document.createElement( 'img' );
	spinner.id = 'mw-spinner-' + id;
	spinner.src = '/ico/spinner.gif';
	spinner.alt = spinner.title = '...';
	if( element.nextSibling ) {
		element.parentNode.insertBefore( spinner, element.nextSibling );
	} else {
		element.parentNode.appendChild( spinner );
	}
}

/**
 * Remove a progress spinner added with injectSpinner()
 *
 * @param id Identifier string
 */
function removeSpinner( id ) {
	var spinner = document.getElementById( 'mw-spinner-' + id );
	if( spinner ) {
		spinner.parentNode.removeChild( spinner );
	}
}