连续向上滚动JS代码(滚动一次暂停再滚动) 多浏览器兼容

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连续向上滚动JS代码(滚动一次暂停再滚动) 多浏览器兼容

时间：2012-09-20 点击：1386

function srcMarquee(){

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")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();

}

srcMarquee.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.BakStep = this.Step;

this.ID.style.width = this.Width;

this.ID.style.height = this.Height;

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.Direction > 1 && msobj.ClientScroll <msobj.Width))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);

}

srcMarquee.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;

}

</script>

<style>

#Scroll{clear:both;margin:0 auto ;width:808px;height:27px;line-height:27px;border:1px solid #CDC9CA;text-align:left;color:#C2130E;background:url(http://mat1.qq.com/news/images/pub/2007/n_scroll.gif) no-repeat 18px 7px;padding-left:100px;font-size:12px;}

#Scroll a{text-decoration:none;color:#000;margin-right:5px;background:url(http://mat1.qq.com/news/images/pub/2007/n_bar.gif) no-repeat 0 0;padding-left:10px;padding-right:20px;}

#Scroll a.s_end{padding-right:0;margin-left:8px;}

</style>

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