function marquee()
{
	this.id = document.getelementbyid(arguments[0]);
	if(!this.id)
	{
		alert("您要设置的\"" + arguments[0] + "\"初始化错误\r\n请检查标签id设置是否正确!");
		this.id = -1;
		return;
	}
	this.direction = this.width = this.height = this.delaytime = this.waittime = this.ctl = this.startid = this.stop = this.mouseover = 0;
	this.step = 1;
	this.timer = 30;
	this.directionarray = {"top":0 , "up":0 , "bottom":1 , "down":1 , "left":2 , "right":3};
	if(typeof arguments[1] == "number" || typeof arguments[1] == "string")this.direction = arguments[1];
	if(typeof arguments[2] == "number")this.step = arguments[2];
	if(typeof arguments[3] == "number")this.width = arguments[3];
	if(typeof arguments[4] == "number")this.height = arguments[4];
	if(typeof arguments[5] == "number")this.timer = arguments[5];
	if(typeof arguments[6] == "number")this.delaytime = arguments[6];
	if(typeof arguments[7] == "number")this.waittime = arguments[7];
	if(typeof arguments[8] == "number")this.scrollstep = arguments[8];
	this.id.style.overflow = this.id.style.overflowx = this.id.style.overflowy = "hidden";
	this.id.nowrap = true;
	this.isnotopera = (navigator.useragent.tolowercase().indexof("opera") == -1);
	if(arguments.length >= 7)this.start();
}

marquee.prototype.start = function()
{
	if(this.id == -1)return;
	if(this.waittime < 800)this.waittime = 800;
	if(this.timer < 20)this.timer = 20;
	if(this.width == 0)this.width = parseint(this.id.style.width);
	if(this.height == 0)this.height = parseint(this.id.style.height);
	if(typeof this.direction == "string")this.direction = this.directionarray[this.direction.tostring().tolowercase()];
	this.halfwidth = math.round(this.width / 2);
	this.halfheight = math.round(this.height / 2);
	this.bakstep = this.step;
	this.id.style.width = this.width + "px";
	this.id.style.height = this.height + "px";
	if(typeof this.scrollstep != "number")this.scrollstep = this.direction > 1 ? this.width : this.height;
	var templateleft = "<table cellspacing='0' cellpadding='0' style='border-collapse:collapse;display:inline;'><tr><td nowrap=true style='white-space: nowrap;word-break:keep-all;'>msclass_temp_html</td><td nowrap=true style='white-space: nowrap;word-break:keep-all;'>msclass_temp_html</td></tr></table>";
	var templatetop = "<table cellspacing='0' cellpadding='0' style='border-collapse:collapse;'><tr><td>msclass_temp_html</td></tr><tr><td>msclass_temp_html</td></tr></table>";
	var msobj = this;
	msobj.temphtml = msobj.id.innerhtml;
	if(msobj.direction <= 1)
	{
		msobj.id.innerhtml = templatetop.replace(/msclass_temp_html/g,msobj.id.innerhtml);
	}
	else
	{
		if(msobj.scrollstep == 0 && msobj.delaytime == 0)
		{
			msobj.id.innerhtml += msobj.id.innerhtml;
		}
		else
		{
			msobj.id.innerhtml = templateleft.replace(/msclass_temp_html/g,msobj.id.innerhtml);
		}
	}
	var timer = this.timer;
	var delaytime = this.delaytime;
	var waittime = this.waittime;
	msobj.startid = function(){msobj.scroll()}
	msobj.continue = function()
				{
					if(msobj.mouseover == 1)
					{
						settimeout(msobj.continue,delaytime);
					}
					else
					{	clearinterval(msobj.timerid);
						msobj.ctl = msobj.stop = 0;
						msobj.timerid = setinterval(msobj.startid,timer);
					}
				}

	msobj.pause = function()
			{
				msobj.stop = 1;
				clearinterval(msobj.timerid);
				settimeout(msobj.continue,delaytime);
			}

	msobj.begin = function()
		{
			msobj.clientscroll = msobj.direction > 1 ? msobj.id.scrollwidth / 2 : msobj.id.scrollheight / 2;
			if((msobj.direction <= 1 && msobj.clientscroll <= msobj.height + msobj.step) || (msobj.direction > 1 && msobj.clientscroll <= msobj.width + msobj.step))			{
				msobj.id.innerhtml = msobj.temphtml;
				delete(msobj.temphtml);
				return;
			}
			delete(msobj.temphtml);
			msobj.timerid = setinterval(msobj.startid,timer);
			if(msobj.scrollstep < 0)return;
			msobj.id.onmousemove = function(event)
						{
							if(msobj.scrollstep == 0 && msobj.direction > 1)
							{
								var event = event || window.event;
								if(window.event)
								{
									if(msobj.isnotopera)
									{
										msobj.eventleft = event.srcelement.id == msobj.id.id ? event.offsetx - msobj.id.scrollleft : event.srcelement.offsetleft - msobj.id.scrollleft + event.offsetx;
									}
									else
									{
										msobj.scrollstep = null;
										return;
									}
								}
								else
								{
									msobj.eventleft = event.layerx - msobj.id.scrollleft;
								}
								msobj.direction = msobj.eventleft > msobj.halfwidth ? 3 : 2;
								msobj.abscenter = math.abs(msobj.halfwidth - msobj.eventleft);
								msobj.step = math.round(msobj.abscenter * (msobj.bakstep*2) / msobj.halfwidth);
							}
						}
			msobj.id.onmouseover = function()
						{
							if(msobj.scrollstep == 0)return;
							msobj.mouseover = 1;
							clearinterval(msobj.timerid);
						}
			msobj.id.onmouseout = function()
						{
							if(msobj.scrollstep == 0)
							{
								if(msobj.step == 0)msobj.step = 1;
								return;
							}
							msobj.mouseover = 0;
							if(msobj.stop == 0)
							{
								clearinterval(msobj.timerid);
								msobj.timerid = setinterval(msobj.startid,timer);
							}
						}
		}
	settimeout(msobj.begin,waittime);
}

marquee.prototype.scroll = function()
{
	switch(this.direction)
	{
		case 0:
			this.ctl += this.step;
			if(this.ctl >= this.scrollstep && this.delaytime > 0)
			{
				this.id.scrolltop += this.scrollstep + this.step - this.ctl;
				this.pause();
				return;
			}
			else
			{
				if(this.id.scrolltop >= this.clientscroll)
				{
					this.id.scrolltop -= this.clientscroll;
				}
				this.id.scrolltop += this.step;
			}
		break;

		case 1:
			this.ctl += this.step;
			if(this.ctl >= this.scrollstep && this.delaytime > 0)
			{
				this.id.scrolltop -= this.scrollstep + this.step - this.ctl;
				this.pause();
				return;
			}
			else
			{
				if(this.id.scrolltop <= 0)
				{
					this.id.scrolltop += this.clientscroll;
				}
				this.id.scrolltop -= this.step;
			}
		break;

		case 2:
			this.ctl += this.step;
			if(this.ctl >= this.scrollstep && this.delaytime > 0)
			{
				this.id.scrollleft += this.scrollstep + this.step - this.ctl;
				this.pause();
				return;
			}
			else
			{
				if(this.id.scrollleft >= this.clientscroll)
				{
					this.id.scrollleft -= this.clientscroll;
				}
				this.id.scrollleft += this.step;
			}
		break;

		case 3:
			this.ctl += this.step;
			if(this.ctl >= this.scrollstep && this.delaytime > 0)
			{
				this.id.scrollleft -= this.scrollstep + this.step - this.ctl;
				this.pause();
				return;
			}
			else
			{
				if(this.id.scrollleft <= 0)
				{
					this.id.scrollleft += this.clientscroll;
				}
				this.id.scrollleft -= this.step;
			}
		break;
	}
}