求一段javascript代码

Question

<STYLE type=text/css>
#slidemenubar2 {BACKGROUND-COLOR:#408080;
FONT: 9pt/20pt "宋体"; LEFT: -110pt; POSITION: absolute; TOP: 100pt; WIDTH:80pt}
BODY {FONT-SIZE: 9pt; MARGIN: 0pt}
#slidemenubar { BACKGROUND-COLOR: #f3f3f3;FONT: 9pt/20pt "宋体"; LEFT: -110pt; POSITION: absolute; TOP: 100pt; WIDTH: 80pt; layer-background-color: lightyellow}
</STYLE><SCRIPT language=JavaScript>
if (document.all)
document.write('<div id="slidemenubar2" style="left:-100" onMouseover="pull()" onMouseout="draw()">')
</SCRIPT>
<LAYER id=slidemenubar onmouseout=draw() onmouseover=pull()>
<SCRIPT language=JavaScript>
var sitems=new Array()
var sitemlinks=new Array()
sitems[0]="世纪鸟-电子图书城"
sitemlinks[0]="http://www.80cn.com/ebook/"
sitems[1]="世纪鸟-网页设计室"
sitemlinks[1]="http://www.80cn.com/web/"
for (i=0;i<=sitems.length-1;i++)
document.write('<a href='+sitemlinks[i]+'><font color=#8000FF>'+sitems[i]+'</a><br>')
</SCRIPT>
</LAYER>
<SCRIPT language=JavaScript>
function regenerate(){
window.location.reload()
}
function regenerate2(){
if (document.layers)
setTimeout("window.onresize=regenerate",400)
}
window.onload=regenerate2
if (document.all){
document.write('</div>')
themenu=document.all.slidemenubar2.style
rightboundary=0
leftboundary=-100
}
else{
themenu=document.layers.slidemenubar
rightboundary=100
leftboundary=10
}
function pull(){
if (window.drawit)
clearInterval(drawit)
pullit=setInterval("pullengine()",50)
}
function draw(){
clearInterval(pullit)
drawit=setInterval("drawengine()",50)
}
function pullengine(){
if (document.all&&themenu.pixelLeft<rightboundary)
themenu.pixelLeft+=5
else if(document.layers&&themenu.left<rightboundary)
themenu.left+=5
else if (window.pullit)
clearInterval(pullit)
}
function drawengine(){
if (document.all&&themenu.pixelLeft>leftboundary)
themenu.pixelLeft-=5
else if(document.layers&&themenu.left>leftboundary)
themenu.left-=5
else if (window.drawit)
clearInterval(drawit)
}
</SCRIPT>是这样的吗?