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友情链接

字幕滚动效果---非常酷哦（七）

以下是代码片段：
<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>网页特效|Linkweb.cn/Js|---字幕滚动效果---非常酷哦（七）</title>
</head>

<body onload=init()>

<SCRIPT language=JavaScript>
function DynLayer(id,nestref,frame) {
if (!is.ns5 && !DynLayer.set && !frame) DynLayerInit()
this.frame = frame || self
if (is.ns) {
  if (is.ns4) {
   if (!frame) {
    if (!nestref) var nestref = DynLayer.nestRefArray[id]
    if (!DynLayerTest(id,nestref)) return
    this.css = (nestref)? eval("document."+nestref+".document."+id) : document.layers[id]
   }
   else this.css = (nestref)? eval("frame.document."+nestref+".document."+id) : frame.document.layers[id]
   this.elm = this.event = this.css
   this.doc = this.css.document
  }
  else if (is.ns5) {
   this.elm = document.getElementById(id)
   this.css = this.elm.style
   this.doc = document
  }
  this.x = this.css.left
  this.y = this.css.top
  this.w = this.css.clip.width
  this.h = this.css.clip.height
}
else if (is.ie) {
  this.elm = this.event = this.frame.document.all[id]
  this.css = this.frame.document.all[id].style
  this.doc = document
  this.x = this.elm.offsetLeft
  this.y = this.elm.offsetTop
  this.w = (is.ie4)? this.css.pixelWidth : this.elm.offsetWidth
  this.h = (is.ie4)? this.css.pixelHeight : this.elm.offsetHeight
}
this.id = id
this.nestref = nestref
this.obj = id + "DynLayer"
eval(this.obj + "=this")
}
function DynLayerMoveTo(x,y) {
if (x!=null) {
  this.x = x
  if (is.ns) this.css.left = this.x
  else this.css.pixelLeft = this.x
}
if (y!=null) {
  this.y = y
  if (is.ns) this.css.top = this.y
  else this.css.pixelTop = this.y
}
}
function DynLayerMoveBy(x,y)
function DynLayerShow() {
this.css.visibility = (is.ns4)? "show" : "visible"
}
function DynLayerHide() {
this.css.visibility = (is.ns4)? "hide" : "hidden"
}
DynLayer.prototype.moveTo = DynLayerMoveTo
DynLayer.prototype.moveBy = DynLayerMoveBy
DynLayer.prototype.show = DynLayerShow
DynLayer.prototype.hide = DynLayerHide
DynLayerTest = new Function('return true')

// DynLayerInit Function
function DynLayerInit(nestref) {
if (!DynLayer.set) DynLayer.set = true
if (is.ns) {
  if (nestref) ref = eval('document.'+nestref+'.document')
  else {nestref = ''; ref = document;}
  for (var i=0; i<ref.layers.length; i++) {
   var divname = ref.layers[i].name
   DynLayer.nestRefArray[divname] = nestref
   var index = divname.indexOf("Div")
   if (index > 0) {
    eval(divname.substr(0,index)+' = new DynLayer("'+divname+'","'+nestref+'")')
   }
   if (ref.layers[i].document.layers.length > 0) {
    DynLayer.refArray[DynLayer.refArray.length] = (nestref=='')? ref.layers[i].name : nestref+'.document.'+ref.layers[i].name
   }
  }
  if (DynLayer.refArray.i < DynLayer.refArray.length)
}
else if (is.ie) {
  for (var i=0; i<document.all.tags("DIV").length; i++) {
   var divname = document.all.tags("DIV")[i].id
   var index = divname.indexOf("Div")
   if (index > 0) {
    eval(divname.substr(0,index)+' = new DynLayer("'+divname+'")')
   }
  }
}
return true
}
DynLayer.nestRefArray = new Array()
DynLayer.refArray = new Array()
DynLayer.refArray.i = 0
DynLayer.set = false

// Slide Methods
function DynLayerSlideTo(endx,endy,inc,speed,fn) {
if (endx==null) endx = this.x
if (endy==null) endy = this.y
var distx = endx-this.x
var disty = endy-this.y
this.slideStart(endx,endy,distx,disty,inc,speed,fn)
}
function DynLayerSlideBy(distx,disty,inc,speed,fn) {
var endx = this.x + distx
var endy = this.y + disty
this.slideStart(endx,endy,distx,disty,inc,speed,fn)
}
function DynLayerSlideStart(endx,endy,distx,disty,inc,speed,fn) {
if (this.slideActive) return
if (!inc) inc = 10
if (!speed) speed = 20
var num = Math.sqrt(Math.pow(distx,2) + Math.pow(disty,2))/inc
if (num==0) return
var dx = distx/num
var dy = disty/num
if (!fn) fn = null
this.slideActive = true
this.slide(dx,dy,endx,endy,num,1,speed,fn)
}
function DynLayerSlide(dx,dy,endx,endy,num,i,speed,fn) {
if (!this.slideActive) return
if (i++ < num) {
  this.moveBy(dx,dy)
  this.onSlide()
  if (this.slideActive) setTimeout(this.obj+".slide("+dx+","+dy+","+endx+","+endy+","+num+","+i+","+speed+",\""+fn+"\")",speed)
  else this.onSlideEnd()
}
else {
  this.slideActive = false
  this.moveTo(endx,endy)
  this.onSlide()
  this.onSlideEnd()
  eval(fn)
}
}
function DynLayerSlideInit() {}
DynLayer.prototype.slideInit = DynLayerSlideInit
DynLayer.prototype.slideTo = DynLayerSlideTo
DynLayer.prototype.slideBy = DynLayerSlideBy
DynLayer.prototype.slideStart = DynLayerSlideStart
DynLayer.prototype.slide = DynLayerSlide
DynLayer.prototype.onSlide = new Function()
DynLayer.prototype.onSlideEnd = new Function()

// Clip Methods
function DynLayerClipInit(clipTop,clipRight,clipBottom,clipLeft) {
if (is.ie) {
  if (arguments.length==4) this.clipTo(clipTop,clipRight,clipBottom,clipLeft)
  else if (is.ie4) this.clipTo(0,this.css.pixelWidth,this.css.pixelHeight,0)
}
}
function DynLayerClipTo(t,r,b,l) {
if (t==null) t = this.clipValues('t')
if (r==null) r = this.clipValues('r')
if (b==null) b = this.clipValues('b')
if (l==null) l = this.clipValues('l')
if (is.ns) {
  this.css.clip.top = t
  this.css.clip.right = r
  this.css.clip.bottom = b
  this.css.clip.left = l
}
else if (is.ie) this.css.clip = "rect("+t+"px "+r+"px "+b+"px "+l+"px)"
}
function DynLayerClipBy(t,r,b,l)
function DynLayerClipValues(which) {
if (is.ie) var clipv = this.css.clip.split("rect(")[1].split(")")[0].split("px")
if (which=="t") return (is.ns)? this.css.clip.top : Number(clipv[0])
if (which=="r") return (is.ns)? this.css.clip.right : Number(clipv[1])
if (which=="b") return (is.ns)? this.css.clip.bottom : Number(clipv[2])
if (which=="l") return (is.ns)? this.css.clip.left : Number(clipv[3])
}
DynLayer.prototype.clipInit = DynLayerClipInit
DynLayer.prototype.clipTo = DynLayerClipTo
DynLayer.prototype.clipBy = DynLayerClipBy
DynLayer.prototype.clipValues = DynLayerClipValues

// Write Method
function DynLayerWrite(html) {
if (is.ns)
else if (is.ie) {
this.event.innerHTML = html
}
}
DynLayer.prototype.write = DynLayerWrite

// BrowserCheck Object
function BrowserCheck() {
var b = navigator.appName
if (b=="Netscape") this.b = "ns"
else if (b=="Microsoft Internet Explorer") this.b = "ie"
else this.b = b
this.version = navigator.appVersion
this.v = parseInt(this.version)
this.ns = (this.b=="ns" && this.v>=4)
this.ns4 = (this.b=="ns" && this.v==4)
this.ns5 = (this.b=="ns" && this.v==5)
this.ie = (this.b=="ie" && this.v>=4)
this.ie4 = (this.version.indexOf('MSIE 4')>0)
this.ie5 = (this.version.indexOf('MSIE 5')>0)
this.min = (this.ns||this.ie)
}
is = new BrowserCheck()

// CSS Function
function css(id,left,top,width,height,color,vis,z,other) {
if (id=="START") return '<STYLE TYPE="text/css">\n'
else if (id=="END") return '</STYLE>'
var str = (left!=null && top!=null)? '#'+id+' {position:absolute; left:'+left+'px; top:'+top+'px;' : '#'+id+' {position:relative;'
if (arguments.length>=4 && width!=null) str += ' width:'+width+'px;'
if (arguments.length>=5 && height!=null) {
str += ' height:'+height+'px;'
if (arguments.length<9 || other.indexOf('clip')==-1) str += ' clip:rect(0px '+width+'px '+height+'px 0px);'
}
if (arguments.length>=6 && color!=null) str += (is.ns)? ' layer-background-color:'+color+';' : ' background-color:'+color+';'
if (arguments.length>=7 && vis!=null) str += ' visibility:'+vis+';'
if (arguments.length>=8 && z!=null) str += ' z-index:'+z+';'
if (arguments.length==9 && other!=null) str += ' '+other
str += '}\n'
return str
}
function writeCSS(str,showAlert) {
str = css('START')+str+css('END')
document.write(str)
if (showAlert) alert(str)
}

</SCRIPT>

<SCRIPT language=JavaScript>
function MiniScroll(window,content) {
this.window = window
this.content = content
this.inc = 8
this.speed = 20
this.contentHeight = (is.ns)? this.content.doc.height : this.content.elm.scrollHeight
this.contentWidth = (is.ns)? this.content.doc.width : this.content.elm.scrollWidth
this.up = MiniScrollUp
this.down = MiniScrollDown
this.left = MiniScrollLeft
this.right = MiniScrollRight
this.stop = MiniScrollStop
this.activate = MiniScrollActivate
this.activate(this.contentWidth,this.contentHeight)
}
function MiniScrollActivate() {
this.offsetHeight = this.contentHeight-this.window.h
this.offsetWidth = this.contentWidth-this.window.w
this.enableVScroll = (this.offsetHeight>0)
this.enableHScroll = (this.offsetWidth>0)
}
function MiniScrollUp() {
if (this.enableVScroll) this.content.slideTo(null,0,this.inc,this.speed)
}
function MiniScrollDown() {
if (this.enableVScroll) this.content.slideTo(null,-this.offsetHeight,this.inc,this.speed)
}
function MiniScrollLeft() {
if (this.enableHScroll) this.content.slideTo(0,null,this.inc,this.speed)
}
function MiniScrollRight() {
if (this.enableHScroll) this.content.slideTo(-this.offsetWidth,null,this.inc,this.speed)
}
function MiniScrollStop() {
this.content.slideActive = false
}

</SCRIPT>

<SCRIPT language=JavaScript>
<!--