这个其实是可以办到的，你看很多网站上都实现了图片在服务器中是连续变化的例子，例如洪恩，我将洪恩的代码展示如下，当然朋友也可以到官网去看http://www.hongen.com/pc/homepage/javascript/sample/showlogo.htm。
在代码的下面我将告诉你它的核心原理

<script language="JavaScript1.2"> 
<!-- 
var scrollerwidth=64
var Scrollerheight=64
var scrollerbgcolor='white'
var pausebetweenimages=3000

var slideimages=new Array()
slideimages[0]='<a href="http://www.hongen.com/pc/index.htm">;<img src="img/logo1.gif" border=0"></a>'
slideimages[1]='<a href="http://www.hongen.com/eng/index.htm">;<img src="img/logo2.gif">'
slideimages[2]='<a href="http://www.hongen.com/shop/index.htm">;<img src="img/logo3.gif">'
slideimages[3]='<a href="http://www.hongen.com/album/index.htm">;<img src="img/logo4.gif">'
slideimages[4]='<a href="http://www.hongen.com/matrix/">;<img src="img/logo5.gif">'

if (slideimages.length>1)
i=2
else
i=0

function move1(whichlayer){
tlayer=eval(whichlayer)
if (tlayer.top>0&&tlayer.top<=5){
tlayer.top=0
setTimeout("move1(tlayer)",pausebetweenimages)
setTimeout("move2(document.main.document.second)",pausebetweenimages)
return
}
if (tlayer.top>=tlayer.document.height*-1){
tlayer.top-=5
setTimeout("move1(tlayer)",100)
}
else{
tlayer.top=scrollerheight
tlayer.document.write(slideimages[i])
tlayer.document.close()
if (i==slideimages.length-1)
i=0
else
i++
}
}

function move2(whichlayer){
tlayer2=eval(whichlayer)
if (tlayer2.top>0&&tlayer2.top<=5){
tlayer2.top=0
setTimeout("move2(tlayer2)",pausebetweenimages)
setTimeout("move1(document.main.document.first)",pausebetweenimages)
return
}
if (tlayer2.top>=tlayer2.document.height*-1){
tlayer2.top-=5
setTimeout("move2(tlayer2)",100)
}
else{
tlayer2.top=scrollerheight
tlayer2.document.write(slideimages[i])
tlayer2.document.close()
if (i==slideimages.length-1)
i=0
else
i++
}
}

function move3(whichdiv){
tdiv=eval(whichdiv)
if (tdiv.style.pixelTop>0&&tdiv.style.pixelTop<=5){
tdiv.style.pixelTop=0
setTimeout("move3(tdiv)",pausebetweenimages)
setTimeout("move4(second2)",pausebetweenimages)
return
}
if (tdiv.style.pixelTop>=tdiv.offsetHeight*-1){
tdiv.style.pixelTop-=5
setTimeout("move3(tdiv)",100)
}
else{
tdiv.style.pixelTop=scrollerheight
tdiv.innerHTML=slideimages[i]
if (i==slideimages.length-1)
i=0
else
i++
}
}

function move4(whichdiv){
tdiv2=eval(whichdiv)
if (tdiv2.style.pixelTop>0&&tdiv2.style.pixelTop<=5){
tdiv2.style.pixelTop=0
setTimeout("move4(tdiv2)",pausebetweenimages)
setTimeout("move3(first2)",pausebetweenimages)
return
}
if (tdiv2.style.pixelTop>=tdiv2.offsetHeight*-1){
tdiv2.style.pixelTop-=5
setTimeout("move4(second2)",100)
}
else{
tdiv2.style.pixelTop=scrollerheight
tdiv2.innerHTML=slideimages[i]
if (i==slideimages.length-1)
i=0
else
i++
}
}

function startscroll(){
if (document.all){
move3(first2)
second2.style.top=scrollerheight
}
else if (document.layers){
move1(document.main.document.first)
document.main.document.second.top=scrollerheight+5
document.main.document.second.visibility='show'
}
}

window.onload=startscroll

//-->

</script>
      <ilayer id="main" width=&{scrollerwidth}; height=&{scrollerheight}; bgcolor=&{scrollerbgcolor};> 
      <layer id="first" left=0 top=1 width=&{scrollerwidth};> 
      <script language="JavaScript1.2">
if (document.layers)
document.write(slideimages[0])
</script>
      </layer>
      <layer id="second" left=0 top=0 width=&{scrollerwidth}; visibility=hide> 
      <script language="JavaScript1.2">
if (document.layers)
document.write(slideimages[1])
</script>
      </layer>
      </ilayer>
      <p> 
        <script language="JavaScript1.2">
<!-- 

if (document.all){
document.writeln('<span id="main2" style="position:relative;width:'+scrollerwidth+';height:'+scrollerheight+';overflow:hiden;background-color:'+scrollerbgcolor+'">')
document.writeln('<div style="position:absolute;width:'+scrollerwidth+';height:'+scrollerheight+';clip:rect(0 '+scrollerwidth+' '+scrollerheight+' 0);left:0;top:0">')
document.writeln('<div id="first2" style="position:absolute;width:'+scrollerwidth+';left:0;top:1;">')
document.write(slideimages[0])
document.writeln('</div>')
document.writeln('<div id="second2" style="position:absolute;width:'+scrollerwidth+';left:0;top:0">')
document.write(slideimages[1])
document.writeln('</div>')
document.writeln('</div>')
document.writeln('</span>')
}
//--> 

</script>

这是很长的代码呀，其实它的实现原理很简单，我们可以将这张图片预先存储在缓存中，这个javascript代码该怎么写呢，你可以var pic=new Array();
pic[0]=new Image();
pic[0].src="http://www.attjs.com/image/1.jpg";//这两行代码就是告诉浏览器我要将图片预储存在缓存中拉，如果我不关闭浏览器或则认为清除缓存，它永远存在于缓存中
这样，再加上图片滚动的代码就可以实现在服务器中是连续变化的了。

no javafx script but javafx 2.0 and later