/*
 * Frontend JS
 *
 * @package Fluida
 */

jQuery( document ).ready( function() {

	cryoutLpBoxesRatios();
	cryoutMobileMenuInit();
	cryoutFixedMobileMenu();
	cryoutInitNav( '#mobile-menu' );
	cryoutMenuAnimate();
	cryoutBackToTop();
	cryoutSearchFormAnimation();
	cryoutSocialTitles();
	cryoutBodyClasses();
	cryoutTabsWidget();
	cryoutPortfolioFilter();
	cryoutTitleLettering()
	cryoutBoxesAnimation();
	cryoutRemoveFocus();

	if ( typeof cryout_theme_settings !== 'undefined' ) {

		if ( ( ( cryout_theme_settings.fitvids == 2 ) && ( cryout_theme_settings.is_mobile == 1 ) ) || ( cryout_theme_settings.fitvids == 1 ) ) {
			jQuery( '.entry-content' ).fitVids();
		}

		if ( cryout_theme_settings.autoscroll == 1 ) {
			cryoutAutoScroll();
		}

		/* Animate articles */
		if ( cryout_theme_settings.articleanimation ) {
			animateScroll( '#content-masonry > article', 'animated-article' );
		}

	} /* typeof cryout_theme_settings check */

} ); /* document.ready */

jQuery( window ).on( 'load', function() {

	/* trigger scroll on load */
	jQuery( window ).trigger( 'scroll' );
	cryoutMasonry();
	cryoutPortfolioMasonry();

} ); /* window.load */


/*
 * Functions
**/

/* Force LP boxes images ratios */
function cryoutLpBoxesRatios() {
	for ( var index = 1; index <= cryout_theme_settings.lpboxratios.length; ++index ) {
		jQuery( '.lp-boxes-' + index + ' .lp-box-image' ).keepRatio( cryout_theme_settings.lpboxratios[index-1] );
	}
} /* cryoutLpBoxesRatios() */

function cryoutBoxesAnimation() {
    jQuery( ".lp-boxes-animated.lp-boxes" ).mousedir( ".lp-boxes-animated.lp-boxes:not(.lp-boxes-animated2) .lp-box" );
} /* cryoutBoxesAnimation() */

/* Site Title Letter break */
function cryoutTitleLettering() {
	var str = jQuery( "#site-title span a" ).text();
	var newstr = "";
	var delay = 0.05;
	for ( var i = 0, len = str.length; i < len; i++ ) {
		if ( str[i]!=' ' )
			newstr += "<span>" + str[i] + "</span>";
		else
			newstr += "<span>&nbsp;</span>";
	}
	jQuery( "#site-title span a" ).html( newstr );
	jQuery( "#site-title > span > a > span" ).each( function() {
		jQuery( this ).css( {'transition': 'color 0s ease ' + delay + 's,' + ' background-color 0s ease ' + delay + 's'} );
		delay += .02;
	});
} /* cryoutTitleLettering() */

/* Menu animation */
function cryoutMenuAnimate() {
	jQuery( '#access > .menu ul li > a:not(:only-child)' ).attr( 'aria-haspopup', 'true' );/* IE10 mobile Fix */

	jQuery( '#access li' ).on( 'mouseenter', function() {
		jQuery( this ).addClass( 'menu-hover' );
	} ).on( 'mouseleave', function() {
		jQuery( this ).removeClass( 'menu-hover' );
	} );

	jQuery( '#access ul' ).find( 'a' ).on( 'focus', function() {
		jQuery( this ).parents( '.menu-item, .page_item' ).addClass( 'menu-hover' );
	} );

	jQuery( '#access ul' ).find( 'a' ).on( 'blur', function() {
		jQuery( this ).parents( '.menu-item, .page_item' ).removeClass( 'menu-hover' );
	} );
} /* cryoutMenuAnimate() */

/* Back to top button animation */
function cryoutBackToTop() {
	jQuery( window ).on( 'scroll', function() {
		if ( jQuery( this ).scrollTop() > 500 ) {
			jQuery( '#toTop' ).css( { 'bottom': '-2px', 'opacity': 1 } );
		} else {
			jQuery( '#toTop' ).css( { 'bottom': '100px', 'opacity': 0 } );
		}
		if ( jQuery( this ).scrollTop() > 300 ) {
			jQuery( '.fluida-fixed-menu #site-header-main' ).addClass( 'header-fixed' );
		} else {
			jQuery( '.fluida-fixed-menu #site-header-main' ).removeClass( 'header-fixed' );
		}
	} );

	jQuery( '#toTop' ).on( 'click', function( event ) {
		event.preventDefault();
		jQuery( 'html, body' ).animate( { scrollTop: 0 }, 500 );
		return false;
	} );
} /* cryoutBackToTop() */

/* Search form animation */
function cryoutSearchFormAnimation() {
	var searchIcon = jQuery( '#access .menu-search-animated > a' ),
	searchForm = jQuery( '.menu-search-animated .searchform' ),
	searchInput = jQuery( '#access .menu-search-animated .s' );

	searchIcon.on( 'click', function( event ) {
		event.preventDefault();
		searchForm.slideToggle( 100 );
		searchInput.trigger( 'focus' );
		searchInput.css('outline', 'none');
		event.stopPropagation();
	} );

	searchForm.on( 'click', function( event ){
		event.stopPropagation();
	} );

	searchInput.on( 'blur', function() {
		searchForm.fadeOut( 100 );
	} );

} /* cryoutSearchFormAnimation() */

/* Mobile Menu */
function cryoutMobileMenuInit() {

	/* First and last elements in the menu */
	var firstTab = jQuery('nav#mobile-menu #mobile-nav > li:first-child a');
	var lastTab  = jQuery('#nav-cancel'); /* Cancel button will always be last */
	jQuery('#nav-toggle').on( 'click', function(e){
		e.preventDefault();
		jQuery('#mobile-menu').show().animate({left: 0}, 500);
		jQuery('body').addClass("noscroll");
		firstTab.trigger('focus');
		return false;
	});

	jQuery('#nav-cancel').on( 'click', function(e){
		e.preventDefault();
		jQuery('#mobile-menu').animate( {left: '100%'}, 500, function(){ jQuery(this).css('left', '-100%').hide(); });
		jQuery('body').removeClass('noscroll');
		jQuery('#nav-toggle').trigger('focus');
		return false;
	});

	/* Redirect last tab to first input */
	lastTab.on('keydown', function (e) {
		if (jQuery('body').hasClass('noscroll'))
		if ((e.which === 9 && !e.shiftKey)) {
			e.preventDefault();
			firstTab.focus();
		}
	});

	/* Redirect first shift+tab to last input*/
	firstTab.on('keydown', function (e) {
		if (jQuery('body').hasClass('noscroll'))
		if ((e.which === 9 && e.shiftKey)) {
			e.preventDefault();
			lastTab.trigger('focus');
		}
	});

	/* Allow escape key to close menu */
	jQuery('nav#mobile-menu').on('keyup', function(e){
		if (jQuery('body').hasClass('noscroll'))
		if (e.keyCode === 27 ) {
			jQuery('body').removeClass('noscroll');
			lastTab.trigger('focus');
		};
	});

	/* Remove animated class from mobile menu */
	jQuery( '#mobile-menu .menu-main-search' ).removeClass( 'menu-search-animated' );

	jQuery( '#mobile-menu > div' ).append( jQuery( '#sheader' ).clone() );
	jQuery( '#mobile-menu #sheader' ).attr( 'id', 'smobile' );

} /* cryoutMobileMenuInit() */

/* Add fixed mobile menu functionality */
function cryoutFixedMobileMenu(){

	/* Only run if fixed menu is enabled */
	if ( cryout_theme_settings.menustyle != 1 ) return;

	var c, currentScrollTop = 0, currentScrollBottom,
	navbar = jQuery( '#site-header-main' ),
	body = jQuery( 'body' );

	jQuery( window ).on( 'scroll', function () {
		var a = jQuery( window ).scrollTop();
		var b = jQuery( document ).height();
		var viewport = jQuery( window ).height();
		var navbarHeight = navbar.height();

		currentScrollTop = a;
		currentScrollBottom = b;

		if ( c < currentScrollTop && a > navbarHeight + navbarHeight ) {
			/* Scrolling down */
			body.removeClass( 'mobile-fixed' );
		} else if ( ( currentScrollTop > viewport ) && ( currentScrollTop < currentScrollBottom - viewport * 2 ) && ( c > currentScrollTop ) && ( ! ( a <= navbarHeight ) ) ) {
			/* Scrolling up */
			body.addClass( 'mobile-fixed' );
		}

		c = currentScrollTop;

		/* Always clear fixed class when returning to the top */
		if ( currentScrollTop <= navbarHeight ) {
			body.removeClass( 'mobile-fixed' );
		}

	} );
} /* cryoutFixedMobileMenu() */

/* Add submenus toggles to the primary navigation */
function cryoutInitNav( selector ) {

	var container = jQuery( selector );

	/* Add dropdown toggle that display child menu items. */
	container.find( '.menu-item-has-children > a' ).after( '<button class="dropdown-toggle" aria-expanded="false"></button>' );
	container.find( '.page_item_has_children > a' ).after( '<button class="dropdown-toggle" aria-expanded="false"></button>' );

	/* Toggle buttons and submenu items with active children menu items. */
	container.find( '.current-menu-ancestor > button, .current-page-ancestor > button' ).addClass( 'toggle-on' );
	container.find( '.current-menu-ancestor > .sub-menu, .current-page-ancestor > .sub-menu, .current-menu-ancestor .children, .current-page-ancestor .children' ).show( 0 ).addClass( 'toggled-on' );

	container.find( '.dropdown-toggle' ).on( 'click', function( e ) {
		var _this = jQuery( this );
		e.preventDefault();
		_this.toggleClass( 'toggle-on' );
		if ( _this.hasClass( 'toggle-on') ) {
			_this.next( '.children, .sub-menu' ).show( 0 ).addClass( 'toggled-on' );
			_this.prev( 'a' ).addClass( 'toggled-on' );
		}
		else {
			_this.next( '.children, .sub-menu' ).removeClass( 'toggled-on' );
			_this.next( '.children, .sub-menu' ).find( '.children, .sub-menu' ).removeClass( 'toggled-on' );
			_this.next( '.children, .sub-menu' ).find( 'a' ).removeClass( 'toggled-on' );
			_this.next( '.children, .sub-menu' ).find( '.dropdown-toggle' ).removeClass( 'toggled-on' );
			_this.prev( 'a' ).removeClass( 'toggled-on' );

			setTimeout( function() {
				_this.next( '.children, .sub-menu' ).hide( 0 );
				_this.next( '.children, .sub-menu' ).find( '.children, .sub-menu' ).hide( 0 );
			}, 600 );
		}

		/* _this.parent().find( 'a' ).toggleClass( 'toggled-on' ); */
		_this.attr( 'aria-expanded', _this.attr( 'aria-expanded' ) === 'false' ? 'true' : 'false' );
	} );

	/* Close mobile menu on click/tap */
	jQuery( 'body' ).on( 'click', '#mobile-nav a', function() {
		jQuery( '#nav-cancel i' ).trigger( 'click' );
	} );

} /* cryoutInitNav() */

/* LP Boxes Keep aspect ratio*/
jQuery.fn.keepRatio = function( ratio ) {

	var $this = jQuery( this );
	var nh = $this.width() / ratio;
	$this.css( 'height', nh + 'px' );

	jQuery( window ).on( 'resize', function() {
		var nh = $this.width() / ratio;
		$this.css( 'height', nh + 'px' );
	} );

}; /* keepRatio() */

/* LP Box Mouse direction overlay animation */
jQuery.fn.mousedir = function( el ) {
	if ( ! jQuery( 'body' ).hasClass( 'fluida-landing-page' ) ) return;

	var $this = jQuery( this ),
		$el = jQuery( el ),
		last_position = {},
		$output = 'direction-down';

	jQuery( document ).on( 'mousemove', function ( event ) {
		if ( typeof( last_position.x ) !== 'undefined' ) {
			var deltaX = last_position.x - event.offsetX,
			deltaY = last_position.y - event.offsetY;
			if ( ( Math.abs( deltaX ) > Math.abs( deltaY ) ) && ( deltaX > 0 ) ) {
				$output = 'direction-left';
			} else if ( ( Math.abs( deltaX ) > Math.abs( deltaY ) ) && ( deltaX < 0 ) ) {
				$output = 'direction-right';
			} else if ( ( Math.abs( deltaY ) > Math.abs( deltaX ) ) && ( deltaY > 0 ) ) {
				$output = 'direction-up';
			} else if ( ( Math.abs( deltaY ) > Math.abs( deltaX ) ) && ( deltaY < 0 ) ) {
				$output = 'direction-down';
			} else {
				$output = 'direction-down';
			}
		}
		last_position = {
        	x : event.offsetX,
        	y : event.offsetY
		};
	} );

	$el.on( 'mouseenter', function() {
		jQuery( this ).removeClass( 'in-direction-left in-direction-right in-direction-up in-direction-down' +
			' out-direction-left out-direction-right out-direction-up out-direction-down' );
		jQuery( this ).addClass( 'in-' + $output );
		return;
	} );

	$el.on( 'mouseleave', function() {
		jQuery( this ).removeClass( 'in-direction-left in-direction-right in-direction-up in-direction-down ' +
			' out-direction-left out-direction-right out-direction-up out-direction-down' );
		jQuery( this ).addClass( 'out-' + $output );
		return;
	} );

}; /* mouseDir() */

/* Check if element is visible in browser window */
function isInViewport( el ) {
	if ( ! jQuery( el ).length ) return;

	var adminHeight = ( jQuery( '#wpadminbar' ).length ) ? jQuery( '#wpadminbar' ).height() : 0;

	var elementTop = jQuery( el ).offset().top;
	var elementBottom = elementTop + jQuery( el ).outerHeight();

	var viewportTop = jQuery( window ).scrollTop();
	var viewportBottom = viewportTop + jQuery( window ).height() - adminHeight;

	return ( elementBottom > viewportTop ) && ( elementTop < viewportBottom );
} /* isInViewport() */

/* Animate on scroll */
function animateScroll( $articles, $class = 'animated-article' ) {

	var $articles = jQuery( $articles );

	$articles.each( function( i, el ) {
		if ( ! isInViewport( el ) ) {
			jQuery( el ).addClass( $class );
		}
	} );

	jQuery( window ).on( 'scroll', function() {
		$articles.each( function( i, el ) {
			if ( isInViewport( el ) ) {
				jQuery( el ).removeClass( $class );
			}
		} );
	} );

	jQuery( window ).trigger( 'scroll' );
} /* animateScroll() */

/*  Add social icons titles */
function cryoutSocialTitles() {

	jQuery( '.socials a' ).each( function() {
		jQuery( this ).attr( 'title', jQuery( this ).children().html() );
		jQuery( this ).html( '' );
	} );

} /* cryoutSocialTitles() */

/* Add body classes */
function cryoutBodyClasses() {
	/* Detect and apply custom class for Safari */
	if ( navigator.userAgent.indexOf( 'Safari' ) != -1 && navigator.userAgent.indexOf( 'Chrome' ) == -1) {
		jQuery( 'body' ).addClass( 'safari' );
	}
	/* Add body class if masonry is used on page */
	if ( jQuery( '#content-masonry' ).length > 0 ) {
		jQuery( 'body' ).addClass( 'fluida-with-masonry' );
	}
} /* cryoutBodyClasses() */

/* Remove all off-canvas states */
function cryoutRemoveFocus() {
	jQuery( '#access a, #site-title a' ).on( 'mouseup mousedown', function() {
		jQuery( this ).trigger( 'blur' );
	} );
	jQuery( 'input, textarea, select, button' ).on( 'mouseup mousedown', function() {
		jQuery( this ).css('outline', 'none');
	} )
} /* cryoutRemoveFocus() */

/*  Tabs widget */
function cryoutTabsWidget() {
		var tabsNav = jQuery( '.cryout-wtabs-nav' ),
			tabsNavLis = tabsNav.children( 'li' );

		tabsNav.each( function() {
			var localthis = jQuery( this );
			localthis.next().children( '.cryout-wtab' ).stop( true, true )
				.children( 'li' ).hide()
				.parent().siblings( localthis.find( 'a' ).attr( 'href' ) )
				.children( 'li' ).show();
			localthis.children( 'li' ).first()
				.addClass( 'active' ).stop( true, true ).show();
		} );

		tabsNavLis.on( 'click', function( e ) {
			var localthis = jQuery( this ),
				tabs_duration = 200;

			localthis.siblings().removeClass( 'active' ).end().addClass( 'active' );
			localthis.parent().next().children( '.cryout-wtab' ).stop( true, true )
				.children( 'li' ).hide()
				.parent().siblings( localthis.find( 'a' ).attr( 'href' ) )
				.children( 'li' ).each( function( index ) {
					jQuery( this ).fadeIn( tabs_duration * ( index + 1 ) );
			} );
			e.preventDefault();
		} ).children( window.location.hash ? 'a[href="' + window.location.hash + '"]' : 'a:first' )
			.trigger( 'click' );

} /* cryoutTabsWidget() */

/* Blog Masonry */
function cryoutMasonry() {
	if ( ( cryout_theme_settings.masonry == 1 ) &&
		( cryout_theme_settings.magazine != 1 ) &&
		( typeof jQuery.fn.masonry !== 'undefined' )
	) {
		jQuery( '#content-masonry' ).masonry( {
			itemSelector: 'article',
			columnWidth: 'article',
			percentPosition: true,
			isRTL: cryout_theme_settings.rtl,
		} );
	}
} /* cryoutMasonry() */

/* Jetpack Portfolio Masonry */
function cryoutPortfolioMasonry() {
	if ( ( cryout_theme_settings.masonry == 1 ) && ( typeof jQuery.fn.masonry !== 'undefined' ) ) {
		jQuery( '#lp-portfolio .jetpack-portfolio-shortcode' ).masonry( {
			itemSelector: '.portfolio-entry',
			columnWidth: '.portfolio-entry:not(.hidey)',
			percentPosition: true,
			isRTL: cryout_theme_settings.rtl,
		} );
	}
} /* cryoutPortfolioMasonry() */

/* Portfolio filtering */
function cryoutPortfolioFilter() {
	jQuery( 'body' ).on( 'click', '#portfolio-filter > a', function( e ) {
		e.preventDefault();
		jQuery( '#portfolio-filter > a' ).removeClass( 'active' );
		jQuery( this ).addClass( 'active' );
		var filter = jQuery( this ).attr( 'data-slug' );
		jQuery( '#portfolio-masonry .portfolio-entry' ).each( function( i, elm ) {
			if ( filter == 'all' ) {
				jQuery( elm ).removeClass( 'hidey' ).fadeIn( 'fast' );
			} else {
				if ( ! jQuery( elm ).hasClass( 'type-' + filter ) ) {
					jQuery( elm ).addClass( 'hidey' ).fadeOut( 'fast' );
				} else {
					jQuery( elm ).removeClass( 'hidey' ).fadeIn( 'fast' );
				}
			}
		} ).promise().done( function() {
				cryoutPortfolioMasonry();
				/*jQuery('.jetpack-portfolio-shortcode').masonry();*/
		} );
		return false;
	} );
} /* cryoutPortfolioFilter() */
/**
 * Scroll to anchors
 */
function cryoutAutoScroll(document, history, location) {
	document = window.document;
	history = window.history;
	location = window.location;
	var HISTORY_SUPPORT = !! ( history && history.pushState );
	var anchorScrolls = {
		ANCHOR_REGEX: /^#[^ ]+$/,
		OFFSET_HEIGHT_PX: jQuery( '.fluida-fixed-menu #site-header-main' ).height(),

		/* Establish events, and fix initial scroll position if a hash is provided. */
		init: function() {
			this.scrollToCurrent();
			jQuery( window ).on(
				'hashchange',
				jQuery.proxy( this, 'scrollToCurrent' )
			);
			jQuery( 'body' ).on(
				'click',
				'.main a, nav ul li a, .meta-arrow',
				jQuery.proxy( this, 'delegateAnchors' )
			);
		},

		/*  Return the offset amount to deduct from the normal scroll position.
			Modify as appropriate to allow for dynamic calculations. */
		getFixedOffset: function() {
			return ( this.OFFSET_HEIGHT_PX ) ? this.OFFSET_HEIGHT_PX : 0;
		},

		/* If the provided href is an anchor which resolves to an element on the page, scroll to it. */
		scrollIfAnchor: function( href, pushToHistory ) {
			var match, anchorOffset;

			if ( ! this.ANCHOR_REGEX.test( href ) ) {
				return false;
			}

			match = document.getElementById(href.slice(1));

			if ( match && ( ! isInViewport( match ) ) && jQuery( match ).offset().top ) {
				anchorOffset = jQuery( match ).offset().top - this.getFixedOffset();
				jQuery( 'html, body' ).animate( { scrollTop: anchorOffset} );

				/* Add the state to history as-per normal anchor links */
				if ( HISTORY_SUPPORT && pushToHistory ) {
					history.pushState( {}, document.title, location.pathname + href );
				}
			}

			return !!match;
		},

		/* Attempt to scroll to the current location's hash */
		scrollToCurrent: function(e) {
			if (this.scrollIfAnchor(window.location.hash) && e) {
				e.preventDefault();
			}
		},

		/* If the click event's target was an anchor, fix the scroll position */
		delegateAnchors: function( e ) {
			var elem = e.target.closest( 'a' );

			if ( this.scrollIfAnchor( elem.getAttribute( 'href' ), true ) ) {
				e.preventDefault();
			}
		}
	};

	jQuery( document ).ready( jQuery.proxy( anchorScrolls, 'init' ) );
}

/* FitVids 1.1*/
;(function( $ ){

  'use strict';

  $.fn.fitVids = function( options ) {
    var settings = {
      customSelector: null,
      ignore: null
    };

    if(!document.getElementById('fit-vids-style')) {
      /* appendStyles: https://github.com/toddmotto/fluidvids/blob/master/dist/fluidvids.js */
      var head = document.head || document.getElementsByTagName('head')[0];
      var css = '.fluid-width-video-wrapper{width:100%;position:relative;padding:0;}.fluid-width-video-wrapper iframe,.fluid-width-video-wrapper object,.fluid-width-video-wrapper embed {position:absolute;top:0;left:0;width:100%;height:100%;}';
      var div = document.createElement("div");
      div.innerHTML = '<p>x</p><style id="fit-vids-style">' + css + '</style>';
      head.appendChild(div.childNodes[1]);
    }

    if ( options ) {
      $.extend( settings, options );
    }

    return this.each(function(){
      var selectors = [
        'iframe[src*="player.vimeo.com"]',
        'iframe[src*="youtube.com"]',
        'iframe[src*="youtube-nocookie.com"]',
        'iframe[src*="kickstarter.com"][src*="video.html"]',
        'object',
        'embed'
      ];

      if (settings.customSelector) {
        selectors.push(settings.customSelector);
      }

      var ignoreList = '.fitvidsignore, .wp-block-embed__wrapper';

      if(settings.ignore) {
        ignoreList = ignoreList + ', ' + settings.ignore;
      }

      var $allVideos = $(this).find(selectors.join(','));
      $allVideos = $allVideos.not('object object'); /* SwfObj conflict patch */
      $allVideos = $allVideos.not(ignoreList); /* Disable FitVids on this video. */

      $allVideos.each(function(){
        var $this = $(this);
        if($this.parents(ignoreList).length > 0) {
          return; /* Disable FitVids on this video. */
        }
        if (this.tagName.toLowerCase() === 'embed' && $this.parent('object').length || $this.parent('.fluid-width-video-wrapper').length) { return; }
        if ((!$this.css('height') && !$this.css('width')) && (isNaN($this.attr('height')) || isNaN($this.attr('width'))))
        {
          $this.attr('height', 9);
          $this.attr('width', 16);
        }
        var height = ( this.tagName.toLowerCase() === 'object' || ($this.attr('height') && !isNaN(parseInt($this.attr('height'), 10))) ) ? parseInt($this.attr('height'), 10) : $this.height(),
            width = !isNaN(parseInt($this.attr('width'), 10)) ? parseInt($this.attr('width'), 10) : $this.width(),
            aspectRatio = height / width;
        if(!$this.attr('name')){
          var videoName = 'fitvid' + $.fn.fitVids._count;
          $this.attr('name', videoName);
          $.fn.fitVids._count++;
        }
        $this.wrap('<div class="fluid-width-video-wrapper"></div>').parent('.fluid-width-video-wrapper').css('padding-top', (aspectRatio * 100)+'%');
        $this.removeAttr('height').removeAttr('width');
      } );
    } );
  };

  /* Internal counter for unique video names. */
  $.fn.fitVids._count = 0;

/* Works with either jQuery or Zepto */
})( window.jQuery || window.Zepto );

/* IE .closest() fix */
if ( window.Element && ( ! Element.prototype.closest ) ) {
    Element.prototype.closest = function( s ) {
        var matches = ( this.document || this.ownerDocument ).querySelectorAll( s ),
            i,
            el = this;
        do {
            i = matches.length;
            while (--i >= 0 && matches.item( i ) !== el) {}
        } while ( (i < 0) && ( el = el.parentElement ) );
        return el;
    };
}

/* FIN */