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
		}
	}
};

//����ͼƭ���캯��
//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("����ָ��scrollcontid.");
			return
		};
		this.scrollcontdiv = sina.$(this.scrollcontid);
		if (!this.scrollcontdiv) {
			throw new error("scrollcontid������ȷ�ķ���.(scrollcontid = \"" + this.scrollcontid + "\")");
			return
		};
		this.scrollcontdiv.style.width = this.framewidth + "px";
		this.scrollcontdiv.style.overflow = "hidden";
		this.listdiv01.innerhtml = this.listdiv02.innerhtml = this.scrollcontdiv.innerhtml;
		this.scrollcontdiv.innerhtml = "";
		this.scrollcontdiv.appendchild(this.stripdiv);
		this.stripdiv.appendchild(this.listdiv01);
		this.stripdiv.appendchild(this.listdiv02);
		this.stripdiv.style.overflow = "hidden";
		this.stripdiv.style.zoom = "1";
		this.stripdiv.style.width = "32766px";
		this.listdiv01.style.cssfloat = "left";
		this.listdiv02.style.cssfloat = "left";
		sina.addevent(this.scrollcontdiv, "mouseover", function("scrollpic.childs[" + this.id + "].stop()"));
		sina.addevent(this.scrollcontdiv, "mouseout", function("scrollpic.childs[" + this.id + "].play()"));
		if (this.arrleftid) {
			this.arrleftobj = sina.$(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 = "��" + (i + 1) + "ҳ";
					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
			}
		}
	}
};