<script language="JavaScript1.2">

//Autumn leaves- by Kurt Grigg (kurt.grigg@virgin.net)
//Modified by Dynamic Drive for NS6 functionality

//Pre-load your image below!
grphcs=new Array(6)
Image0=new Image();
Image0.src=grphcs[0]="al.gif";
Image1=new Image();
Image1.src=grphcs[1]="bl.gif"
Image2=new Image();
Image2.src=grphcs[2]="cl.gif"
Image3=new Image();
Image3.src=grphcs[3]="dl.gif"
Image4=new Image();
Image4.src=grphcs[4]="el.gif"
Image5=new Image();
Image5.src=grphcs[5]="fl.gif"

Amount=8; //Smoothness depends on image file size, the smaller the size the more you can use!
Ypos=new Array();
Xpos=new Array();
Speed=new Array();
Step=new Array();
Cstep=new Array();
ns=(document.layers)?1:0;
ns6=(document.getElementById&&!document.all)?1:0;

if (ns){
for (i = 0; i < Amount; i++){
var P=Math.floor(Math.random()*grphcs.length);
rndPic=grphcs[P];
document.write("<LAYER NAME='sn"+i+"' LEFT=0 TOP=0><img src="+rndPic+"></LAYER>");
}
}
else{
document.write('<div style="position:absolute;top:0px;left:0px"><div style="position:relative">');
for (i = 0; i < Amount; i++){
var P=Math.floor(Math.random()*grphcs.length);
rndPic=grphcs[P];
document.write('<img id="si'+i+'" src="'+rndPic+'" style="position:absolute;top:0px;left:0px">');
}
document.write('</div></div>');
}
WinHeight=(ns||ns6)?window.innerHeight:window.document.body.clientHeight;
WinWidth=(ns||ns6)?window.innerWidth-70:window.document.body.clientWidth;
for (i=0; i < Amount; i++){                                                               
Ypos[i] = Math.round(Math.random()*WinHeight);
Xpos[i] = Math.round(Math.random()*WinWidth);
Speed[i]= Math.random()*5+3;
Cstep[i]=0;
Step[i]=Math.random()*0.1+0.05;
}
function fall(){
var WinHeight=(ns||ns6)?window.innerHeight:window.document.body.clientHeight;
var WinWidth=(ns||ns6)?window.innerWidth-70:window.document.body.clientWidth;
var hscrll=(ns||ns6)?window.pageYOffset:document.body.scrollTop;
var wscrll=(ns||ns6)?window.pageXOffset:document.body.scrollLeft;
for (i=0; i < Amount; i++){
sy = Speed[i]*Math.sin(90*Math.PI/180);
sx = Speed[i]*Math.cos(Cstep[i]);
Ypos[i]+=sy;
Xpos[i]+=sx;
if (Ypos[i] > WinHeight){
Ypos[i]=-60;
Xpos[i]=Math.round(Math.random()*WinWidth);
Speed[i]=Math.random()*5+3;
}
if (ns){
document.layers['sn'+i].left=Xpos[i];
document.layers['sn'+i].top=Ypos[i]+hscrll;
}
else if (ns6){
document.getElementById("si"+i).style.left=Math.min(WinWidth,Xpos[i]);
document.getElementById("si"+i).style.top=Ypos[i]+hscrll;
}
else{
eval("document.all.si"+i).style.left=Xpos[i];
eval("document.all.si"+i).style.top=Ypos[i]+hscrll;
}
Cstep[i]+=Step[i];
}
setTimeout('fall()',20);
}

window.onload=fall
//-->
</script>
Insert the following code into an insert html box.  Please leave the credits in place.
Right click on each of the leaves above and choose SAVE AS - leave the file names the same and save to your Desktop.  Open File Manager in SiteBuilder and minimize the window so you can drag it out of the way and see the Desktop. Drag each of the above images into the root directory. Publish each one.
Script for Falling Leaves
Remember when you add scripts like this that you are adding page weight and additional code for the search engines to have to crawl through.