//停顿滚动脚本
function Marquee()
{
this.ID = document.getElementById(arguments[0]);
if(!this.ID)
{
this.ID = -1;
return;
}
this.Direction = this.Width = this.Height = this.DelayTime = this.WaitTime = this.Correct = this.CTL = this.StartID = this.Stop = this.MouseOver = 0;
this.Step = 1;
this.Timer = 30;
this.DirectionArray = {"top":0 , "bottom":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 msobj = this;
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 : msobj.ID.scrollHeight;
if((msobj.Direction <= 1 && msobj.ClientScroll <= msobj.Height + msobj.Step) || (msobj.Direction > 1 && msobj.ClientScroll <= msobj.Width + msobj.Step))return;
msobj.ID.innerHTML += msobj.ID.innerHTML;
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;
}
}
