24   function getItem(el) {  argument
25     return findAncestorByClass(el, 'thumbnail-container');
28   function updatePinnedDom(el, pinned) {  argument
29     el.querySelector('.pin').title = localStrings.getString(pinned ?
32       el.classList.add('pinned');
34       el.classList.remove('pinned');
38   function getThumbnailIndex(el) {  argument
39     var nodes = el.parentNode.querySelectorAll('.thumbnail-container');
40     return Array.prototype.indexOf.call(nodes, el);  argument
43   function MostVisited(el, miniview, menu, useSmallGrid, visible) {  argument
44     this.element = el;
53     el.addEventListener('click', this.handleClick_.bind(this));
54     el.addEventListener('keydown', this.handleKeyDown_.bind(this));
64     el.addEventListener('dragstart', this.handleDragStart_.bind(this));
65     el.addEventListener('dragenter', this.handleDragEnter_.bind(this));
66     el.addEventListener('dragover', this.handleDragOver_.bind(this));
67     el.addEventListener('dragleave', this.handleDragLeave_.bind(this));
68     el.addEventListener('drop', this.handleDrop_.bind(this));
69     el.addEventListener('dragend', this.handleDragEnd_.bind(this));
70     el.addEventListener('drag', this.handleDrag_.bind(this));
71     el.addEventListener('mousedown', this.handleMouseDown_.bind(this));
75     togglePinned_: function(el) {  argument
76       var index = getThumbnailIndex(el);
84       updatePinnedDom(el, item.pinned);
114     blacklist: function(el) {  argument
116       var url = el.href;
119       el.classList.add('hide');
161           el.classList.add('fade-in');
512     canDropOnElement_: function(el) {  argument
513       return this.dragItem_ && el &&
514           el.classList.contains('thumbnail-container') &&
515           !el.classList.contains('filler');