YAOHAIXIAO.COM

程序简介

YTabs！划过显示图片的列表新闻，我用Ytabs实现的一个很实用的特效，当鼠标划过文字链接，显示相应的图片的列表新闻特效。兼容性好，调用超方便。

调用方法

第一步：在页面中调用ytabs.js文件，例如：

<script type="text/javascript" src="js/ytabs.js"></script>

第二步：编写调用代码：

(function(){
    YAO.YTabs({
		tabRoot: 'YHover',
		tabs: 'dt',
		contents: 'dd'
	});
})();
	

程序代码

var YAO = function(){ var D = document, OP = Object.prototype, OA = 'object Array', OF = '[object Function]', nt = 'nodeType', reCache = {}, patterns = { HYPHEN: /(-[a-z])/i, ROOT_TAG: /body|html/i, CLASS_RE_TOKENS: /([\.\(\)\^\$\*\+\?\|\[\]\{\}])/g }, CUSTOM_ATTRIBUTES = (!document.documentElement.hasAttribute) ? { // IE < 8 'for': 'htmlFor', 'class': 'className' } : { // w3c 'htmlFor': 'for', 'className': 'class' }, _CLASS = 'class', CLASS_NAME = 'className', EMPTY = '', SPACE = ' ', C_START = '(?:^|\\s)', C_END = '(?= |$)', _G = 'g'; return { isArray: function(obj){ return OP.toString.apply(obj) === OA; }, isString: function(s){ return typeof s === 'string'; }, isFunction: function(fn){ return OP.toString.apply(fn) === OF; }, isIE: function(){ var A = navigator.userAgent.match(/MSIE\s([^;]*)/); if (A && A[1]) { return parseFloat(A[1]); } else { return false; } }(), trim: function(str){ try { return str.replace(/^\s+|\s+$/g, ''); } catch (a) { return str; } }, toCamel: function(property){ if (!patterns.HYPHEN.test(property)) { return property; } if (propertyCache[property]) { return propertyCache[property]; } var converted = property; while (patterns.HYPHEN.exec(converted)) { converted = converted.replace(RegExp.$1, RegExp.$1.substr(1).toUpperCase()); } propertyCache[property] = converted; return converted; }, getEl: function(elem){ var elemID, E, m, i, k, length, len; if (elem) { if (elem[nt] || elem.item) { return elem; } if (this.isString(elem)) { elemID = elem; elem = D.getElementById(elem); if (elem && elem.id === elemID) { return elem; } else { if (elem && elem.all) { elem = null; E = D.all[elemID]; for (i = 0, len = E.length; i < len; i += 1) { if (E[i].id === elemID) { return E[i]; } } } } return elem; } else { if (elem.DOM_EVENTS) { elem = elem.get("element"); } else { if (this.isArray(elem)) { m = []; for (k = 0, length = elem.length; k < length; k += 1) { m[m.length] = this.getEl(elem[k]); } return m; } } } } return null; }, getStyle: function(el, property){ if (D.defaultView && D.defaultView.getComputedStyle) { var value = null; if (property == 'float') { property = 'cssFloat'; } var computed = D.defaultView.getComputedStyle(el, ''); if (computed) { value = computed[this.toCamel(property)]; } return el.style[property] || value; } else { if (D.documentElement.currentStyle && this.isIE) { switch (this.toCamel(property)) { case 'opacity': var val = 100; try { val = el.filters['DXImageTransform.Microsoft.Alpha'].opacity; } catch (e) { try { val = el.filters('alpha').opacity; } catch (e) { } } return val / 100; break; case 'float': property = 'styleFloat'; default: var value = el.currentStyle ? el.currentStyle[property] : null; return (el.style[property] || value); } } else { return el.style[property]; } } }, setStyle: function(el, property, val){ if (this.isIE) { switch (property) { case 'opacity': if (this.isString(el.style.filter)) { el.style.filter = 'alpha(opacity=' + val * 100 + ')'; if (!el.currentStyle || !el.currentStyle.hasLayout) { el.style.zoom = 1; } } break; case 'float': property = 'styleFloat'; default: el.style[property] = val; } } else { if (property === 'float') { property = 'cssFloat'; } el.style[property] = val; } }, setStyles: function(el, propertys){ for (var p in propertys) { this.setStyle(el, p, propertys[p]); } return el; }, setOpacity: function(el, val){ this.setStyle(el, 'opacity', val); }, hasClass: function(el, className){ var ret = false, current; if (el && className) { current = this.getAttribute(el, CLASS_NAME) || EMPTY; if (className.exec) { ret = className.test(current); } else { ret = className && (SPACE + current + SPACE).indexOf(SPACE + className + SPACE) > -1; } } else { throw new Error('hasClass called with invalid arguments'); } return ret; }, addClass: function(el, className){ var ret = false, current; if (el && className) { current = this.getAttribute(el, CLASS_NAME) || EMPTY; if (!this.hasClass(el, className)) { this.setAttribute(el, CLASS_NAME, this.trim(current + SPACE + className)); ret = true; } } else { throw new Error('addClass called with invalid arguments'); } return ret; }, removeClass: function(el, className){ var ret = false, current, newClass, attr; if (el && className) { current = this.getAttribute(el, CLASS_NAME) || EMPTY; this.setAttribute(el, CLASS_NAME, current.replace(this.getClassRegex(className), EMPTY)); newClass = this.getAttribute(el, CLASS_NAME); if (current !== newClass) { // else nothing changed this.setAttribute(el, CLASS_NAME, this.trim(newClass)); // trim after comparing to current class ret = true; if (this.getAttribute(el, CLASS_NAME) === '') { // remove class attribute if empty attr = (el.hasAttribute && el.hasAttribute(_CLASS)) ? _CLASS : CLASS_NAME; el.removeAttribute(attr); } } } else { throw new Error('removeClass called with invalid arguments'); } return ret; }, replaceClass: function(el, classObj){ var className, from, to, ret = false, current; if (el && classObj) { from = classObj.from; to = classObj.to; if (!to) { ret = false; } else { if (!from) { // just add if no "from" ret = this.addClass(el, classObj.to); } else { if (from !== to) { // else nothing to replace // May need to lead with DBLSPACE? current = this.getAttribute(el, CLASS_NAME) || EMPTY; className = (SPACE + current.replace(this.getClassRegex(from), SPACE + to)).split(this.getClassRegex(to)); // insert to into what would have been the first occurrence slot className.splice(1, 0, SPACE + to); this.setAttribute(el, CLASS_NAME, this.trim(className.join(EMPTY))); ret = true; } } } } else { throw new Error('replaceClass called with invalid arguments'); } return ret; }, setAttribute: function(el, attr, val){ attr = CUSTOM_ATTRIBUTES[attr] || attr; el.setAttribute(attr, val); }, getAttribute: function(el, attr){ attr = CUSTOM_ATTRIBUTES[attr] || attr; return el.getAttribute(attr); }, getClassRegex: function(className){ var re; if (className !== undefined) { // allow empty string to pass if (className.exec) { // already a RegExp re = className; } else { re = reCache[className]; if (!re) { // escape special chars (".", "[", etc.) className = className.replace(patterns.CLASS_RE_TOKENS, '\\$1'); re = reCache[className] = new RegExp(C_START + className + C_END, _G); } } } return re; }, getElByClassName: function(className, tag, rootId){ var elems = [], i, tempCnt = this.getEl(rootId).getElementsByTagName(tag), len = tempCnt.length; for (i = 0; i < len; ++i) { if (this.hasClass(tempCnt[i], className)) { elems.push(tempCnt[i]); } } if (elems.length < 1) { return false; } else { return elems; } }, fadeUp: function(elem){ if (elem) { var level = 0, fade = function(){ var timer = null; level += 0.05; if (timer) { clearTimeout(timer); timer = null; } if (level > 1) { YAO.setOpacity(elem, 1); return false; } else { YAO.setOpacity(elem, level); } timer = setTimeout(fade, 50); }; fade(); } }, moveElement: function(element, finalX, finalY, speed){ var elem = this.isString(element) ? this.getEl(element) : element, style = null, xpos = 0, ypos = 0, dist = 0, that = this; if (elem) { if (elem.movement) { clearTimeout(elem.movement); } if (!this.getStyle(elem, 'left')) { this.setStyle(elem, 'left', 0); } if (!this.getStyle(elem, 'top')) { this.setStyle(elem, 'top', 0); } xpos = parseInt(this.getStyle(elem, 'left'), 10); ypos = parseInt(this.getStyle(elem, 'top'), 10); if (xpos === finalX && ypos === finalY) { return true; } if (xpos < finalX) { dist = Math.ceil((finalX - xpos) / 10); xpos += dist; } else { if (xpos > finalX) { dist = Math.ceil((xpos - finalX) / 10); xpos -= dist; } } if (ypos < finalY) { dist = Math.ceil((finalY - ypos) / 10); ypos += dist; } else { if (ypos > finalY) { dist = Math.ceil((ypos - finalY) / 10); ypos -= dist; } } this.setStyle(elem, 'left', (xpos + 'px')); this.setStyle(elem, 'top', (ypos + 'px')); elem.movement = setTimeout(function(){ that.moveElement(element, finalX, finalY, speed); }, speed); } }, getEvent: function(e, boundEl){ var ev = e || window.event; if (!ev) { var c = this.getEvent.caller; while (c) { ev = c.arguments[0]; if (ev && Event == ev.constructor) { break; } c = c.caller; } } return ev; }, on: function(el, sType, fn, obj, overrideContext, bCapture){ var oEl = null, context = null, wrappedFn = null, that = this; if (this.isString(el)) { el = this.getEl(el); } if (!el || !fn || !fn.call) { return false; } bCapture = bCapture || false; context = el; if (overrideContext) { if (overrideContext === true) { context = obj; } else { context = overrideContext; } } wrappedFn = function(e){ return fn.call(context, that.getEvent(e, el), obj); }; try { if (window.addEventListener) { el.addEventListener(sType, wrappedFn, bCapture); } else { if (window.attachEvent) { el.attachEvent('on' + sType, wrappedFn); } else { el['on' + sType] = wrappedFn; } } } catch (e) { return false; } }, stopEvent: function(evt){ this.stopPropagation(evt); this.preventDefault(evt); }, stopPropagation: function(evt){ if (evt.stopPropagation) { evt.stopPropagation(); } else { evt.cancelBubble = true; } }, preventDefault: function(evt){ if (evt.preventDefault) { evt.preventDefault(); } else { evt.returnValue = false; } }, ajaxRequest: function(config){ var that = this, option = { oXhr: null, method: config.method ? config.method.toUpperCase() : 'GET', url: config.url || '', fn: config.fn || null, postData: config.data || null, elem: config.id ? that.getEl(config.id) : (config.element || null), load: config.loadFn ? config.loadFn : (config.loading || '正在获取数据，请稍后...') }; if (!option.url) { return; } if (window.XMLHttpRequest) { option.oXhr = new XMLHttpRequest(); } else { if (window.ActiveXObject) { option.oXhr = new ActiveXObject("Microsoft.XMLHTTP"); } } if (option.oXhr) { try { option.oXhr.open(option.method, option.url, true); option.oXhr.onreadystatechange = function(){ if (option.oXhr.readyState !== 4) { return false } if (option.oXhr.readyState == 4) { if (option.oXhr.status == 200 || location.href.indexOf('http') === -1) { if (option.fn) { option.fn.success(option.oXhr); } else { if (that.isFunction(option.load)) { option.load(option.oXhr); } else { option.elem.innerHTML = option.oXhr.responseText; } } } else { if (option.fn) { option.fn.failure(option.oXhr); } else { if (that.isFunction(option.load)) { option.load(option.oXhr); } else { option.elem.innerHTML = option.load; } } } } }; option.oXhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest'); if (option.postData) { option.oXhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8'); } option.oXhr.send(option.postData); } catch (e) { throw new Error(e); return false; } } else { throw new Error("Your browser does not support XMLHTTP."); return false; } }, JSON: function(){ function f(n){ return n < 10 ? '0' + n : n; } Date.prototype.toJSON = function(){ return this.getUTCFullYear() + '-' + f(this.getUTCMonth() + 1) + '-' + f(this.getUTCDate()) + 'T' + f(this.getUTCHours()) + ':' + f(this.getUTCMinutes()) + ':' + f(this.getUTCSeconds()) + 'Z'; }; var m = { '\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '"': '\\"', '\\': '\\\\' }; function stringify(value, whitelist){ var a, i, k, l, r = /["\\\x00-\x1f\x7f-\x9f]/g, v; switch (typeof value) { case 'string': return r.test(value) ? '"' + value.replace(r, function(a){ var c = m[a]; if (c) { return c; } c = a.charCodeAt(); return '\\u00' + Math.floor(c / 16).toString(16) + (c % 16).toString(16); }) + '"' : '"' + value + '"'; case 'number': return isFinite(value) ? String(value) : 'null'; case 'boolean': case 'null': return String(value); case 'object': if (!value) { return 'null'; } if (typeof value.toJSON === 'function') { return stringify(value.toJSON()); } a = []; if (typeof value.length === 'number' && !(value.propertyIsEnumerable('length'))) { l = value.length; for (i = 0; i < l; i += 1) { a.push(stringify(value[i], whitelist) || 'null'); } return '[' + a.join(',') + ']'; } if (whitelist) { l = whitelist.length; for (i = 0; i < l; i += 1) { k = whitelist[i]; if (typeof k === 'string') { v = stringify(value[k], whitelist); if (v) { a.push(stringify(k) + ':' + v); } } } } else { for (k in value) { if (typeof k === 'string') { v = stringify(value[k], whitelist); if (v) { a.push(stringify(k) + ':' + v); } } } } return '{' + a.join(',') + '}'; } } return { stringify: stringify, parse: function(text, filter){ var j; function walk(k, v){ var i, n; if (v && typeof v === 'object') { for (i in v) { if (OP.hasOwnProperty.apply(v, [i])) { n = walk(i, v[i]); if (n !== undefined) { v[i] = n; } else { delete v[i]; } } } } return filter(k, v); } if (/^[\],:{}\s]*$/.test(text.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']').replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) { j = eval('(' + text + ')'); return typeof filter === 'function' ? walk('', j) : j; } throw new SyntaxError('parseJSON'); } }; }(), YTabs: function(){ var i, len = arguments.length, tabs = []; for (i = 0; i < len; ++i) { tabs[i] = new tabView(arguments[i]); tabs[i].init(); } return tabs; } } }(); var tabView = function(oConfigs){ this.tabRoot = YAO.isString(oConfigs.tabRoot) ? YAO.getEl(oConfigs.tabRoot) : (oConfigs.tabRoot || null); this.tabs = YAO.isString(oConfigs.tabs) ? this.tabRoot.getElementsByTagName(oConfigs.tabs) : (oConfigs.tabs || null); this.contents = YAO.isString(oConfigs.contents) ? this.tabRoot.getElementsByTagName(oConfigs.contents) : (oConfigs.contents || null); if(!this.tabs || !this.contents){ return false; } this.length = this.tabs.length || 0; this.defaultIndex = oConfigs.defaultIndex || 0; this.lastIndex = this.defaultIndex; this.lastTab = this.tabs[this.lastIndex] || null; this.lastContent = this.contents[this.lastIndex] || null; this.evtName = oConfigs.evt || 'mouseover'; this.defaultClass = oConfigs.defaultClass || this.CURRENT_TAB_CLASS; this.previousClass = oConfigs.previousClass || ''; this.hideAll = oConfigs.hideAll || false; this.auto = oConfigs.auto || false; this.autoSpeed = oConfigs.autoSpeed || 6000; this.fadeUp = oConfigs.fadeUp || false; this.scroll = oConfigs.scroll || false; this.scrollId = oConfigs.scrollId || null; this.scrollSpeed = oConfigs.scrollSpeed || 5; this.direction = oConfigs.direction || 'V'; this.activeTag = oConfigs.activeTag || 'IMG'; this.stepHeight = oConfigs.stepHeight || 0; this.stepWidth = oConfigs.stepWidth || 0; this.ajax = oConfigs.ajax || false; this.ajaxDefaultInfo = this.contents.innerHTML; this.aPath = oConfigs.aPath || ''; }; tabView.prototype.timer = null; tabView.prototype.isPause = false; tabView.prototype.CURRENT_TAB_CLASS = 'current', tabView.prototype.init = function(){ var i, that = this; if (this.tabs && this.contents) { if (this.auto) { this.timer = setTimeout(function(){ that.autoChange(); }, that.autoSpeed); } if (!this.hideAll) { YAO.addClass(this.lastTab, this.defaultClass); if (!this.ajax && !this.scroll) { if (this.lastContent) { this.lastContent.style.display = 'block'; } } if (this.ajax) { this.ajaxTab(this.lastTab); } if (this.scroll) { this.scrollCnt((this.lastContent || this.contents), this.defaultIndex); } } else { YAO.removeClass(this.lastTab, this.defaultClass); } for (i = 0; i < this.length; ++i) { if (i !== this.defaultIndex) { YAO.removeClass(this.tabs[i], this.CURRENT_TAB_CLASS); if (!this.ajax && !this.scroll) { this.contents[i].style.display = 'none'; } } YAO.on(this.tabs[i], this.evtName, function(index){ return function(event){ var evt = null, curClass = (this.tabs[index] === this.tabs[this.defaultIndex]) ? this.defaultClass : this.CURRENT_TAB_CLASS; if (!YAO.hasClass(this.tabs[index], curClass)) { var currentContent = (this.ajax || (this.scroll && (this.stepHeight || this.stepWidth))) ? this.contents : (this.contents[index] || null); this.setCurrent(currentContent, index); this.lastIndex = index; } if (this.auto) { this.isPause = true; } evt = event || window.event; YAO.stopEvent(evt); } }(i), this.tabs[i], that); YAO.on(this.tabs[i], 'mouseout', function(index){ return function(){ var curTab = this.tabs[index]; if (this.hideAll && this.evtName === 'mouseover') { if (this.lastTab === curTab) { YAO.removeClass(curTab, (YAO.hasClass(curTab, that.defaultClass) ? this.defaultClass : this.CURRENT_TAB_CLASS)); } if (this.previousClassTab) { YAO.removeClass(this.previousClassTab, this.previousClass); } if (!this.scroll && !this.ajax) { this.contents[index].style.display = 'none'; } } else { if (this.auto) { this.isPause = false; } } } }(i), this.tabs[i], that); } } }; tabView.prototype.autoChange = function(){ var that = this; if (!this.isPause) { var currentContent = null, currentTab = null; if (this.timer) { clearTimeout(this.timer); this.timer = null; } this.lastIndex = this.lastIndex + 1; if (this.lastIndex === this.length) { this.lastIndex = 0; } currentContent = this.ajax ? this.contents : (this.contents[this.lastIndex] || null); this.setCurrent(currentContent, this.lastIndex); this.timer = setTimeout(function(){ that.autoChange(); }, this.autoSpeed); } else { this.timer = setTimeout(function(){ that.autoChange() }, this.autoSpeed); return false; } }; tabView.prototype.setCurrent = function(curCnt, index){ var activeObj = null; curTab = this.tabs[index]; YAO.removeClass(this.lastTab, (YAO.hasClass(this.lastTab, this.defaultClass) ? this.defaultClass : this.CURRENT_TAB_CLASS)); if (curTab === this.tabs[this.defaultIndex]) { YAO.addClass(curTab, this.defaultClass); } else { YAO.addClass(curTab, this.CURRENT_TAB_CLASS); } if (this.previousClass) { if (this.previousClassTab) { YAO.removeClass(this.previousClassTab, this.previousClass); } if (index !== 0) { YAO.addClass(this.tabs[index - 1], this.previousClass); if ((index - 1) === this.defaultIndex) { YAO.removeClass(this.tabs[index - 1], this.defaultClass); } this.previousClassTab = (this.tabs[index - 1]); } } if (!this.scroll && !this.ajax) { if (this.lastContent) { this.lastContent.style.display = "none"; } if (curCnt) { curCnt.style.display = "block"; } } if (this.fadeUp) { activeObj = (curCnt.tagName.toUpperCase() === 'IMG') ? curCnt : curCnt.getElementsByTagName('img')[0]; if (this.lastContent !== curCnt) { YAO.fadeUp(activeObj); } } else { if (this.scroll) { this.scrollCnt(curCnt, index); } } if (!this.ajax) { this.lastContent = curCnt; } else { if (this.ajax) { this.ajaxTab(curTab); } } this.lastTab = curTab; }; tabView.prototype.scrollCnt = function(curCnt, index){ var activeObj = null, itemHeight = 0, itemWidth = 0, scrollWidth = 0, scrollHeight = 0; if (this.activeTag) { activeObj = (curCnt.tagName.toUpperCase() === this.activeTag) ? curCnt : curCnt.getElementsByTagName(this.activeTag)[0]; } if (this.direction === 'V') { itemHeight = activeObj ? activeObj.offsetHeight : this.stepHeight; scrollHeight = -(index * itemHeight); } else { itemWidth = activeObj ? activeObj.offsetWidth : this.stepWidth; scrollWidth = -(index * itemWidth); } YAO.moveElement(this.scrollId, scrollWidth, scrollHeight, this.scrollSpeed); }; tabView.prototype.ajaxTab = function(curTab){ var that = this, url = '', ajaxLink = null, loadFn = null, cnt = this.contents, uriData = this.aPath.split('/'), json = (uriData[1].toLowerCase() === '.js' || uriData[1].toLowerCase() === 'json') ? true : false; ajaxLink = (curTab.tagName.toUpperCase() === 'A') ? curTab : curTab.getElementsByTagName('a')[0]; url = uriData[0] + '/' + ajaxLink.rel + uriData[1] + uriData[2] + ajaxLink.rel; if (curTab === this.tabs[this.defaultIndex]) { cnt.innerHTML = this.ajaxDefaultInfo; } else { if(json){ loadFn = function(jsonData){ var data = YAO.JSON.parse(jsonData.responseText); cnt.innerHTML = data.html; } } else{ loadFn = cnt.innerHTML; } YAO.ajaxRequest({ url: url, element: cnt, loadFn: loadFn }); } }; YAO.Carousel = function(oConfig){ this.btnPrevious = YAO.isString(oConfig.btnPrevious) ? YAO.getEl(oConfig.btnPrevious) : (oConfig.btnPrevious || null); this.lnkBtnPrevious = this.btnPrevious.getElementsByTagName('a')[0] || null; this.Container = YAO.isString(oConfig.Container) ? YAO.getEl(oConfig.Container) : (oConfig.Container || null); this.Scroller = YAO.isString(oConfig.Scroller) ? YAO.getEl(oConfig.Scroller) : (oConfig.Scroller || null); this.btnNext = YAO.isString(oConfig.btnNext) ? YAO.getEl(oConfig.btnNext) : (oConfig.btnNext || null); this.lnkBtnNext = this.btnNext.getElementsByTagName('a')[0] || null; this.items = YAO.isString(oConfig.items) ? this.Container.getElementsByTagName(oConfig.items) : (oConfig.items || null); if(!this.btnPrevious || !this.lnkBtnPrevious || !this.Container || !this.Scroller || !this.btnNext || !this.lnkBtnNext || !this.items){ return false; } this.length = this.items.length; this.itemWidth = this.items[0].offsetWidth; this.itemHeight = this.items[0].offsetHeight; this.scrollerWidth = this.itemWidth * this.length; this.scrollHeight = this.itemHeight * this.length; this.derection = oConfig.derection || 'H'; this.stepHeight = oConfig.stepHeight || this.itemHeight; this.stepWidth = oConfig.stepWidth || this.itemWidth; this.groups = this.derection === 'H' ? Math.ceil(this.scrollerWidth / this.stepWidth) : Math.ceil(this.scrollHeight / this.stepHeight); this.maxMovedNum = this.derection === 'H' ? (this.groups - (this.Container.offsetWidth / this.stepWidth)) : (this.groups - (this.Container.offsetHeight / this.stepHeight)); this.scrollSpeed = oConfig.speed || 50; this.init(); }; YAO.Carousel.prototype.movedNum = 0; YAO.Carousel.prototype.LNK_BTNS_DISABLED_CLASS = 'dis'; YAO.Carousel.prototype.init = function(){ var oSelf = this; if (this.derection === 'H') { this.Scroller.style.width = this.scrollerWidth + 'px'; } else { this.Scroller.style.height = this.scrollerHeight + 'px'; } this.Container.style.overflow = 'hidden'; if (this.lnkBtnNext && this.movedNum === this.maxMovedNum) { YAO.addClass(this.lnkBtnNext, this.LNK_BTNS_DISABLED_CLASS); } if (this.lnkBtnPrevious && this.movedNum === 0) { YAO.addClass(this.lnkBtnPrevious, this.LNK_BTNS_DISABLED_CLASS); } YAO.on(this.btnPrevious, 'click', this.scrollPrevious, this.btnPrevious, oSelf); YAO.on(this.btnNext, 'click', this.scrollNext, this.btnNext, oSelf); }; YAO.Carousel.prototype.scrollPrevious = function(event){ var evt = event || window.event; if (this.movedNum > 0) { this.movedNum -= 1; if (this.lnkBtnNext && YAO.hasClass(this.lnkBtnNext, this.LNK_BTNS_DISABLED_CLASS)) { YAO.removeClass(this.lnkBtnNext, this.LNK_BTNS_DISABLED_CLASS); } if (this.movedNum <= 0) { this.movedNum = 0; if (this.lnkBtnPrevious) { YAO.addClass(this.lnkBtnPrevious, this.LNK_BTNS_DISABLED_CLASS); } } this.scroll(this.movedNum); } YAO.stopEvent(evt); }; YAO.Carousel.prototype.scrollNext = function(event){ var evt = event || window.event; if (this.movedNum < this.maxMovedNum) { this.movedNum += 1; if (this.lnkBtnPrevious && YAO.hasClass(this.lnkBtnPrevious, this.LNK_BTNS_DISABLED_CLASS)) { YAO.removeClass(this.lnkBtnPrevious, this.LNK_BTNS_DISABLED_CLASS); } if (this.movedNum >= this.maxMovedNum) { this.movedNum = this.maxMovedNum; if (this.lnkBtnNext) { YAO.addClass(this.lnkBtnNext, this.LNK_BTNS_DISABLED_CLASS); } } this.scroll(this.movedNum); } YAO.stopEvent(evt); }; YAO.Carousel.prototype.scroll = function(steps){ var scrollWidth = 0, scrollHeight = 0; if (this.derection === 'H') { if (this.stepWidth) { scrollWidth = -(this.stepWidth * steps); } else { scrollWidth = -(this.itemWidth * steps); } } else { if (this.stepHeight) { scrollHeight = -(this.stepHeight * steps); } else { scrollHeight = -(this.itemHeight * steps); } } YAO.moveElement(this.Scroller, scrollWidth, scrollHeight, this.scrollSpeed); };