var sina = { $: function(objName) { if (document.getElementById) { return eval('document.getElementById("' + objName + '")') } else { return eval('document.all.' + objName) } }, isIE: navigator.appVersion.indexOf("MSIE") != -1 ? true : false, addEvent: function(l, i, I) { if (l.attachEvent) { l.attachEvent("on" + i, I) } else { l.addEventListener(i, I, false) } }, delEvent: function(l, i, I) { if (l.detachEvent) { l.detachEvent("on" + i, I) } else { l.removeEventListener(i, I, false) } }, readCookie: function(O) { var o = "", l = O + "="; if (document.cookie.length > 0) { var i = document.cookie.indexOf(l); if (i != -1) { i += l.length; var I = document.cookie.indexOf(";", i); if (I == -1) I = document.cookie.length; o = unescape(document.cookie.substring(i, I)) } }; return o }, writeCookie: function(i, l, o, c) { var O = "", I = ""; if (o != null) { O = new Date((new Date).getTime() + o * 3600000); O = "; expires=" + O.toGMTString() }; if (c != null) { I = ";domain=" + c }; document.cookie = i + "=" + escape(l) + O + I }, readStyle: function(I, l) { if (I.style[l]) { return I.style[l] } else if (I.currentStyle) { return I.currentStyle[l] } else if (document.defaultView && document.defaultView.getComputedStyle) { var i = document.defaultView.getComputedStyle(I, null); return i.getPropertyValue(l) } else { return null } } };

//滚动图片构造函数
//UI&UE Dept. mengjia
//080623
function ScrollPic(scrollContId, arrLeftId, arrRightId, dotListId) {
	this.scrollContId = scrollContId;
	this.arrLeftId = arrLeftId;
	this.arrRightId = arrRightId;
	this.dotListId = dotListId;
	this.dotClassName = "dotItem";
	this.dotOnClassName = "dotItemOn";
	this.dotObjArr = [];
	this.pageWidth = 0;
	this.frameWidth = 0;
	this.speed = 10;
	this.space = 10;
	this.pageIndex = 0;
	this.autoPlay = true;
	this.autoPlayTime = 5;
	var _autoTimeObj, _scrollTimeObj, _state = "ready";
	this.stripDiv = document.createElement("DIV");
	this.listDiv01 = document.createElement("DIV");
	this.listDiv02 = document.createElement("DIV");
	if (!ScrollPic.childs) { ScrollPic.childs = [] };
	this.ID = ScrollPic.childs.length; ScrollPic.childs.push(this);
	this.initialize = function() {
		if (!this.scrollContId) {
			throw new Error("必须指定scrollContId."); return
		};
		this.scrollContDiv = sina.$(this.scrollContId);
		if (!this.scrollContDiv) { throw new Error("scrollContId不是正确的对象.(scrollContId = \"" + this.scrollContId + "\")"); return };
		this.scrollContDiv.style.width = this.frameWidth + "px"; this.scrollContDiv.style.overflow = "hidden";
		this.listDiv01.innerHTML = this.listDiv02.innerHTML = this.scrollContDiv.innerHTML;
		this.scrollContDiv.innerHTML = "";
		this.scrollContDiv.appendChild(this.stripDiv);
		this.stripDiv.appendChild(this.listDiv01);
		this.stripDiv.appendChild(this.listDiv02);
		this.stripDiv.style.overflow = "hidden";
		this.stripDiv.style.zoom = "1";
		this.stripDiv.style.width = '4620px';
		this.listDiv01.style.cssFloat = "left";
		this.listDiv02.style.cssFloat = "left";
		sina.addEvent(this.scrollContDiv, "mouseover", Function("ScrollPic.childs[" + this.ID + "].stop()"));
		sina.addEvent(this.scrollContDiv, "mouseout", Function("ScrollPic.childs[" + this.ID + "].play()"));
		if (this.arrLeftId) {
			this.arrLeftObj = sina.$(this.arrLeftId); if (this.arrLeftObj) {
				sina.addEvent(this.arrLeftObj, "mousedown", Function("ScrollPic.childs[" + this.ID + "].rightMouseDown()"));
				sina.addEvent(this.arrLeftObj, "mouseup", Function("ScrollPic.childs[" + this.ID + "].rightEnd()"));
				sina.addEvent(this.arrLeftObj, "mouseout", Function("ScrollPic.childs[" + this.ID + "].rightEnd()"))
			}
		};
		if (this.arrRightId) {
			this.arrRightObj = sina.$(this.arrRightId);
			if (this.arrRightObj) {
				sina.addEvent(this.arrRightObj, "mousedown", Function("ScrollPic.childs[" + this.ID + "].leftMouseDown()"));
				sina.addEvent(this.arrRightObj, "mouseup", Function("ScrollPic.childs[" + this.ID + "].leftEnd()"));
				sina.addEvent(this.arrRightObj, "mouseout", Function("ScrollPic.childs[" + this.ID + "].leftEnd()"))
			}
		};
		if (this.dotListId) {
			this.dotListObj = sina.$(this.dotListId);
			if (this.dotListObj) {
				var pages = Math.round(this.listDiv01.offsetWidth / this.frameWidth + 0.4), i, tempObj; for (i = 0; i < pages; i++) {
					tempObj = document.createElement("span"); this.dotListObj.appendChild(tempObj); this.dotObjArr.push(tempObj);
					if (i == this.pageIndex) { tempObj.className = this.dotClassName } else
					{ tempObj.className = this.dotOnClassName }; tempObj.title = "第" + (i + 1) + "页";
					sina.addEvent(tempObj, "click", Function("ScrollPic.childs[" + this.ID + "].pageTo(" + i + ")"))
				}
			}
		}; if (this.autoPlay) { this.play() }
	};
	this.leftMouseDown = function() {
		if (_state != "ready") { return };
		_state = "floating"; _scrollTimeObj = setInterval("ScrollPic.childs[" + this.ID + "].moveLeft()", this.speed)
	};
	this.rightMouseDown = function() {
		if (_state != "ready") { return };
		_state = "floating"; _scrollTimeObj = setInterval("ScrollPic.childs[" + this.ID + "].moveRight()", this.speed)
	};
	this.moveLeft = function() {
		if (this.scrollContDiv.scrollLeft + this.space >= this.listDiv01.scrollWidth)
		{ this.scrollContDiv.scrollLeft = this.scrollContDiv.scrollLeft + this.space - this.listDiv01.scrollWidth } else
		{ this.scrollContDiv.scrollLeft += this.space }; this.accountPageIndex()
	}; this.moveRight = function() {
		if (this.scrollContDiv.scrollLeft - this.space <= 0)
		{ this.scrollContDiv.scrollLeft = this.listDiv01.scrollWidth + this.scrollContDiv.scrollLeft - this.space }
		else { this.scrollContDiv.scrollLeft -= this.space };
		this.accountPageIndex()
	};
	this.leftEnd = function() {
		if (_state != "floating") { return };
		_state = "stoping"; clearInterval(_scrollTimeObj);
		var fill = this.pageWidth - this.scrollContDiv.scrollLeft % this.pageWidth; this.move(fill)
	};
	this.rightEnd = function() {
		if (_state != "floating") { return };
		_state = "stoping"; clearInterval(_scrollTimeObj);
		var fill = -this.scrollContDiv.scrollLeft % this.pageWidth; this.move(fill)
	};
	this.move = function(num, quick) {
		var thisMove = num / 5; if (!quick) {
			if (thisMove > this.space) { thisMove = this.space };
			if (thisMove < -this.space) { thisMove = -this.space }
		};
		if (Math.abs(thisMove) < 1 && thisMove != 0) { thisMove = thisMove >= 0 ? 1 : -1 } else { thisMove = Math.round(thisMove) };
		var temp = this.scrollContDiv.scrollLeft + thisMove;
		if (thisMove > 0) {
			if (this.scrollContDiv.scrollLeft + thisMove >= this.listDiv01.scrollWidth)
			{ this.scrollContDiv.scrollLeft = this.scrollContDiv.scrollLeft + thisMove - this.listDiv01.scrollWidth }
			else { this.scrollContDiv.scrollLeft += thisMove }
		} else {
			if (this.scrollContDiv.scrollLeft - thisMove <= 0) { this.scrollContDiv.scrollLeft = this.listDiv01.scrollWidth + this.scrollContDiv.scrollLeft - thisMove } else
			{ this.scrollContDiv.scrollLeft += thisMove }
		};
		num -= thisMove;
		if (Math.abs(num) == 0) { _state = "ready"; if (this.autoPlay) { this.play() }; this.accountPageIndex(); return } else
		{ this.accountPageIndex(); setTimeout("ScrollPic.childs[" + this.ID + "].move(" + num + "," + quick + ")", this.speed) }
	};
	this.next = function() {
		if (_state != "ready") { return };
		_state = "stoping"; this.move(this.pageWidth, true)
	};
	this.play = function() {
		if (!this.autoPlay) { return };
		clearInterval(_autoTimeObj); _autoTimeObj = setInterval("ScrollPic.childs[" + this.ID + "].next()", this.autoPlayTime * 1000)
	};
	this.stop = function() { clearInterval(_autoTimeObj) }; this.pageTo = function(num) {
		if (_state != "ready") { return };
		_state = "stoping"; var fill = num * this.frameWidth - this.scrollContDiv.scrollLeft; this.move(fill, true)
	};
	this.accountPageIndex = function() {
		this.pageIndex = Math.round(this.scrollContDiv.scrollLeft / this.frameWidth);
		if (this.pageIndex > Math.round(this.listDiv01.offsetWidth / this.frameWidth + 0.4) - 1) { this.pageIndex = 0 };
		var i; for (i = 0; i < this.dotObjArr.length; i++) {
			if (i == this.pageIndex) { this.dotObjArr[i].className = this.dotClassName }
			else { this.dotObjArr[i].className = this.dotOnClassName }
		}
	}
};