inserire un javascript su ebay

[zenias]

Vorrei inserire il famoso script fiocchi di neve sulle mie inserzioni ebay, però inserendo il seguente script tra il tag <body>

<script src="fall.js" type="text/javascript">
// prelevato ed illustrato su http://www.web-link.it
</script>

dove fall.js:

// Fall v1.7a By Maxx Blade - http://www.maxxblade.co.uk
var fallg=new Array();

///////////// Only Edit these lines ////////////////
var no=25, speed=30, slider=30, fallmax=8, wind=0;
fallg[0]=new Array("http://i200.photobucket.com/albums/aa50/precious_in_pinkk/stellina.gif",25,28,1);


//////////////////////////////////////////////////////////////////
// Don't Edit Below Here Unless You Know What You're Doing ?;o) //
//////////////////////////////////////////////////////////////////
var o=new Array(), tog=1;
var ns4 = (document.layers) ? true : false;
var ie4 = (document.all) ? true : false;
var ns6 = (document.getElementById&&!document.all) ? true : false;
if(ie4) falllayer="document.all['gf'+i].style";
if(ns4) falllayer="document.layers['gf'+i]";
if(ns6) falllayer="document.getElementById('gf'+i).style";
function winWid(){ return (ns4||ns6) ? window.innerWidth : document.body.clientWidth; }
function winHei(){ return (ns4||ns6) ? window.innerHeight : document.body.clientHeight; }
function winOfy(){ return (ns4||ns6) ? window.pageYOffset : document.body.scrollTop; }
function togFall(){
if (tog==1){
clearTimeout(dofall);
for (i = 0; i < no; i++) { with(eval(falllayer)){ top = 0; left = -500; } }
tog=0;
}else{
tog=1;
fall();
}
}
function newobj(q,t){
x=parseInt(Math.random()*fallg.length);
spin = parseInt(Math.random()*slider);
spin = (Math.random()>0.5) ? spin : -spin;
o[q] = new Array(parseInt(Math.random()*(winWid()-slider)),-30,spin,0.02+Math.random()/10,parseInt(1+Math.random()*fallmax),fallg[x][1],fallg[x][2],fallg[x][0],fallg[x][3],0);
if(t==1){
if(ns4){ document.write('<layer name="gf'+q+'" left="0" top="0" visibility="show"><img src="'+o[q][7]+'" border="0"></layer>'); }
if(ie4||ns6){ document.write('<img src="'+o[q][7]+'" border="0" id="gf'+q+'" style="POSITION: absolute; Z-INDEX: -'+q+'; VISIBILITY: visible; TOP: 0px; LEFT: 0px;">'); }
}
if(t==0 && !ns4){
tem=(ie4)?document.all['gf'+q]:document.getElementById('gf'+q);
tem.src=o[q][7];
}
}
function fall(){
for (i = 0; i < no; i++) {
if((o[i][1]>winHei()-o[i][6]-10)||(o[i][0]>winWid()-slider-o[i][5])){ newobj(i,0); }
o[i][1] += o[i][4];
o[i][0]+=wind;
o[i][9] += o[i][3];
sizexy=(o[i][8]==1)?Math.sin(o[i][9]):1;
lay=(ie4)?sizexyarseInt(sizexy+1);
with(eval(falllayer)){
top = o[i][1]+winOfy();
left = o[i][0]+o[i][2]*Math.cos(o[i][9]);
if(!ns4){
zIndex=lay;
width=parseInt(((o[i][5]/4)*3)+((o[i][5]/4)*sizexy));
height=parseInt(((o[i][6]/4)*3)+((o[i][6]/4)*sizexy));
}
}
}
dofall = setTimeout("fall()", speed);
}
for (i = 0; i < no; i++){ newobj(i,1); }
dofall = setTimeout("fall()", 100);

mi da errore segnando:
L'inserzione non può contenere sintassi javascript (".cookie", "cookie(", "replace(", IFRAME, META, o includes), cookie o href.

Esiste lo stesso effetto non in javascript oppure c'è un modo per aggirare questo problemino?
Grazie a tutti in anticipo!