/*ScrollPicleft.js*/

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(a, c, b) {
		if (a.attachEvent) {
			a.attachEvent("on" + c, b)
		} else {
			a.addEventListener(c, b, false)
		}
	},
	delEvent: function(a, c, b) {
		if (a.detachEvent) {
			a.detachEvent("on" + c, b)
		} else {
			a.removeEventListener(c, b, false)
		}
	},
	readCookie: function(d) {
		var e = "",
			a = d + "=";
		if (document.cookie.length > 0) {
			var c = document.cookie.indexOf(a);
			if (c != -1) {
				c += a.length;
				var b = document.cookie.indexOf(";", c);
				if (b == -1) {
					b = document.cookie.length
				}
				e = unescape(document.cookie.substring(c, b))
			}
		}
		return e
	},
	writeCookie: function(d, a, f, g) {
		var e = "",
			b = "";
		if (f != null) {
			e = new Date((new Date).getTime() + f * 3600000);
			e = "; expires=" + e.toGMTString()
		}
		if (g != null) {
			b = ";domain=" + g
		}
		document.cookie = d + "=" + escape(a) + e + b
	},
	readStyle: function(b, a) {
		if (b.style[a]) {
			return b.style[a]
		} else {
			if (b.currentStyle) {
				return b.currentStyle[a]
			} else {
				if (document.defaultView && document.defaultView.getComputedStyle) {
					var c = document.defaultView.getComputedStyle(b, null);
					return c.getPropertyValue(a)
				} else {
					return null
				}
			}
		}
	}
};

function ScrollPicleft(b, g, f, e) {
	this.scrollContId = b;
	this.arrLeftId = g;
	this.arrRightId = f;
	this.dotListId = e;
	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 a, d, c = "ready";
	this.stripDiv = document.createElement("DIV");
	this.listDiv01 = document.createElement("DIV");
	this.listDiv02 = document.createElement("DIV");
	if (!ScrollPicleft.childs) {
		ScrollPicleft.childs = []
	}
	this.ID = ScrollPicleft.childs.length;
	ScrollPicleft.childs.push(this);
	this.initialize = function() {
		if (!this.scrollContId) {
			throw new Error("必须指定scrollContId.");
			return
		}
		this.scrollContDiv = sina.$(this.scrollContId);
		if (!this.scrollContDiv) {
			throw new Error('scrollContId不是正确的对象.(scrollContId = "' + this.scrollContId + '")');
			return
		}
		this.scrollContDiv.style.width = this.frameWidth + "px";
		this.scrollContDiv.style.overflow = "hidden";
		this.listDiv01.innerHTML = this.listDiv02.innerHTML = this.scrollContDiv.innerHTML;
		this.scrollContDiv.innerHTML = "";
		this.scrollContDiv.appendChild(this.stripDiv);
		this.stripDiv.appendChild(this.listDiv01);
		this.stripDiv.appendChild(this.listDiv02);
		this.stripDiv.style.overflow = "hidden";
		this.stripDiv.style.zoom = "1";
		this.stripDiv.style.width = "32766px";
		var l = navigator.userAgent.toUpperCase().indexOf("MSIE") == -1 ? false : true;
		if (l) {
			this.listDiv01.style.styleFloat = "left";
			this.listDiv02.style.styleFloat = "left"
		} else {
			this.listDiv01.style.cssFloat = "left";
			this.listDiv02.style.cssFloat = "left"
		}
		sina.addEvent(this.scrollContDiv, "mouseover", Function("ScrollPicleft.childs[" + this.ID + "].stop()"));
		sina.addEvent(this.scrollContDiv, "mouseout", Function("ScrollPicleft.childs[" + this.ID + "].play()"));
		if (this.arrLeftId) {
			this.arrLeftObj = sina.$(this.arrLeftId);
			if (this.arrLeftObj) {
				sina.addEvent(this.arrLeftObj, "mousedown", Function("ScrollPicleft.childs[" + this.ID + "].rightMouseDown()"));
				sina.addEvent(this.arrLeftObj, "mouseup", Function("ScrollPicleft.childs[" + this.ID + "].rightEnd()"));
				sina.addEvent(this.arrLeftObj, "mouseout", Function("ScrollPicleft.childs[" + this.ID + "].rightEnd()"))
			}
		}
		if (this.arrRightId) {
			this.arrRightObj = sina.$(this.arrRightId);
			if (this.arrRightObj) {
				sina.addEvent(this.arrRightObj, "mousedown", Function("ScrollPicleft.childs[" + this.ID + "].leftMouseDown()"));
				sina.addEvent(this.arrRightObj, "mouseup", Function("ScrollPicleft.childs[" + this.ID + "].leftEnd()"));
				sina.addEvent(this.arrRightObj, "mouseout", Function("ScrollPicleft.childs[" + this.ID + "].leftEnd()"))
			}
		}
		if (this.dotListId) {
			this.dotListObj = sina.$(this.dotListId);
			if (this.dotListObj) {
				var h = Math.round(this.listDiv01.offsetWidth / this.frameWidth + 0.4),
					k, j;
				for (k = 0; k < h; k++) {
					j = document.createElement("span");
					this.dotListObj.appendChild(j);
					this.dotObjArr.push(j);
					if (k == this.pageIndex) {
						j.className = this.dotClassName
					} else {
						j.className = this.dotOnClassName
					}
					j.title = "第" + (k + 1) + "页";
					sina.addEvent(j, "click", Function("ScrollPicleft.childs[" + this.ID + "].pageTo(" + k + ")"))
				}
			}
		}
		if (this.autoPlay) {
			this.play()
		}
	};
	this.leftMouseDown = function() {
		if (c != "ready") {
			return
		}
		c = "floating";
		d = setInterval("ScrollPicleft.childs[" + this.ID + "].moveLeft()", this.speed)
	};
	this.rightMouseDown = function() {
		if (c != "ready") {
			return
		}
		c = "floating";
		d = setInterval("ScrollPicleft.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 (c != "floating") {
			return
		}
		c = "stoping";
		clearInterval(d);
		var h = this.pageWidth - this.scrollContDiv.scrollLeft % this.pageWidth;
		this.move(h)
	};
	this.rightEnd = function() {
		if (c != "floating") {
			return
		}
		c = "stoping";
		clearInterval(d);
		var h = -this.scrollContDiv.scrollLeft % this.pageWidth;
		this.move(h)
	};
	this.move = function(i, j) {
		var k = i / 5;
		if (!j) {
			if (k > this.space) {
				k = this.space
			}
			if (k < -this.space) {
				k = -this.space
			}
		}
		if (Math.abs(k) < 1 && k != 0) {
			k = k >= 0 ? 1 : -1
		} else {
			k = Math.round(k)
		}
		var h = this.scrollContDiv.scrollLeft + k;
		if (k > 0) {
			if (this.scrollContDiv.scrollLeft + k >= this.listDiv01.scrollWidth) {
				this.scrollContDiv.scrollLeft = this.scrollContDiv.scrollLeft + k - this.listDiv01.scrollWidth
			} else {
				this.scrollContDiv.scrollLeft += k
			}
		} else {
			if (this.scrollContDiv.scrollLeft - k <= 0) {
				this.scrollContDiv.scrollLeft = this.listDiv01.scrollWidth + this.scrollContDiv.scrollLeft - k
			} else {
				this.scrollContDiv.scrollLeft += k
			}
		}
		i -= k;
		if (Math.abs(i) == 0) {
			c = "ready";
			if (this.autoPlay) {
				this.play()
			}
			this.accountPageIndex();
			return
		} else {
			this.accountPageIndex();
			setTimeout("ScrollPicleft.childs[" + this.ID + "].move(" + i + "," + j + ")", this.speed)
		}
	};
	this.next = function() {
		if (c != "ready") {
			return
		}
		c = "stoping";
		this.move(this.pageWidth, true)
	};
	this.play = function() {
		if (!this.autoPlay) {
			return
		}
		clearInterval(a);
		a = setInterval("ScrollPicleft.childs[" + this.ID + "].next()", this.autoPlayTime * 1000)
	};
	this.stop = function() {
		clearInterval(a)
	};
	this.pageTo = function(h) {
		if (c != "ready") {
			return
		}
		c = "stoping";
		var i = h * this.frameWidth - this.scrollContDiv.scrollLeft;
		this.move(i, 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 h;
		for (h = 0; h < this.dotObjArr.length; h++) {
			if (h == this.pageIndex) {
				this.dotObjArr[h].className = this.dotClassName
			} else {
				this.dotObjArr[h].className = this.dotOnClassName
			}
		}
	}
};