/**

 * @summary Handles the addition of the comment form.

 *

 * @since 2.7.0

 *

 * @type {Object}

 */

	/**

	 * @summary Retrieves the elements corresponding to the given IDs.

	 *

	 * @since 2.7.0

	 *

	 * @param {string} commId The comment ID.

	 * @param {string} parentId The parent ID.

	 * @param {string} respondId The respond ID.

	 * @param {string} postId The post ID.

	 * @returns {boolean} Always returns false.

	 */

	moveForm: function( commId, parentId, respondId, postId ) {

		var div, element, style, cssHidden,

			t           = this,

			comm        = t.I( commId ),

			respond     = t.I( respondId ),

			cancel      = t.I( 'cancel-comment-reply-link' ),

			parent      = t.I( 'comment_parent' ),

			post        = t.I( 'comment_post_ID' ),

			commentForm = respond.getElementsByTagName( 'form' )[0];

		if ( ! comm || ! respond || ! cancel || ! parent || ! commentForm ) {

		}

		if ( ! t.I( 'wp-temp-form-div' ) ) {

			div = document.createElement( 'div' );

			respond.parentNode.insertBefore( div, respond );

		comm.parentNode.insertBefore( respond, comm.nextSibling );

		if ( post && postId ) {

		}

		/**

		 * @summary Puts back the comment, hides the cancel button and removes the onclick event.

		 *

		 * @returns {boolean} Always returns false.

		 */

			var t       = addComment,

				temp    = t.I( 'wp-temp-form-div' ),

				respond = t.I( t.respondId );

			if ( ! temp || ! respond ) {

			}

			t.I( 'comment_parent' ).value = '0';

			temp.parentNode.insertBefore( respond, temp );

			temp.parentNode.removeChild( temp );

		/*

		 * Sets initial focus to the first form focusable element.

		 * Uses try/catch just to avoid errors in IE 7- which return visibility

		 * 'inherit' when the visibility value is inherited from an ancestor.

		 */

		try {

			for ( var i = 0; i < commentForm.elements.length; i++ ) {

				element = commentForm.elements[i];

				cssHidden = false;

				// Modern browsers.

				if ( 'getComputedStyle' in window ) {

					style = window.getComputedStyle( element );

				// IE 8.

				} else if ( document.documentElement.currentStyle ) {

					style = element.currentStyle;

				}

				/*

				 * For display none, do the same thing jQuery does. For visibility,

				 * check the element computed style since browsers are already doing

				 * the job for us. In fact, the visibility computed style is the actual

				 * computed value and already takes into account the element ancestors.

				 */

				if ( ( element.offsetWidth <= 0 && element.offsetHeight <= 0 ) || style.visibility === 'hidden' ) {

					cssHidden = true;

				}

				// Skip form elements that are hidden or disabled.

				if ( 'hidden' === element.type || element.disabled || cssHidden ) {

					continue;

				}

				element.focus();

				// Stop after the first focusable element.

				break;

			}

		} catch( er ) {}

	/**

	 * @summary Returns the object corresponding to the given ID.

	 *

	 * @since 2.7.0

	 *

	 * @param {string} id The ID.

	 * @returns {Element} The element belonging to the ID.

	 */

	I: function( id ) {

		return document.getElementById( id );